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Finding the Fourth Proportional to 5,885.63, 8,828.45 and 1,990.34

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Solution

The fourth proportional to 5,885.63, 8,828.45 and 1,990.34 is: 2,985.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,885.63 : 8,828.45 = 1,990.34 : x
  2. Step 2: Convert to fraction form
    5,885.63/8,828.45 = 1,990.34/x
  3. Step 3: Cross multiply
    5,885.63x = 8,828.45 × 1,990.34
  4. Step 4: Simplify right side
    5,885.63x = 17,571,563.08
  5. Step 5: Solve for x
    x = 17,571,563.08/5,885.63
  6. Step 6: Final answer
    x = 2,985.51

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.