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Finding the Fourth Proportional to 3,285.88, 4,534.53 and 1,888.63

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Solution

The fourth proportional to 3,285.88, 4,534.53 and 1,888.63 is: 2,606.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.88 : 4,534.53 = 1,888.63 : x
  2. Step 2: Convert to fraction form
    3,285.88/4,534.53 = 1,888.63/x
  3. Step 3: Cross multiply
    3,285.88x = 4,534.53 × 1,888.63
  4. Step 4: Simplify right side
    3,285.88x = 8,564,049.39
  5. Step 5: Solve for x
    x = 8,564,049.39/3,285.88
  6. Step 6: Final answer
    x = 2,606.32

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Half scale
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Double scale
Find fourth proportional to 3,286.88, 4,535.91 and 1,889.63
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.