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Finding the Fourth Proportional to 3,348.56, 4,620.72 and 1,856.12

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Solution

The fourth proportional to 3,348.56, 4,620.72 and 1,856.12 is: 2,561.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,348.56 : 4,620.72 = 1,856.12 : x
  2. Step 2: Convert to fraction form
    3,348.56/4,620.72 = 1,856.12/x
  3. Step 3: Cross multiply
    3,348.56x = 4,620.72 × 1,856.12
  4. Step 4: Simplify right side
    3,348.56x = 8,576,610.81
  5. Step 5: Solve for x
    x = 8,576,610.81/3,348.56
  6. Step 6: Final answer
    x = 2,561.28

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Half scale
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Double scale
Find fourth proportional to 3,349.56, 4,622.10 and 1,857.12
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.