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Finding the Fourth Proportional to 5,788.78, 7,988.46 and 3,136.16

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Solution

The fourth proportional to 5,788.78, 7,988.46 and 3,136.16 is: 4,327.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,788.78 : 7,988.46 = 3,136.16 : x
  2. Step 2: Convert to fraction form
    5,788.78/7,988.46 = 3,136.16/x
  3. Step 3: Cross multiply
    5,788.78x = 7,988.46 × 3,136.16
  4. Step 4: Simplify right side
    5,788.78x = 25,053,088.71
  5. Step 5: Solve for x
    x = 25,053,088.71/5,788.78
  6. Step 6: Final answer
    x = 4,327.87

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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.