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Finding the Fourth Proportional to 5,387.91, 7,435.17 and 3,030

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Solution

The fourth proportional to 5,387.91, 7,435.17 and 3,030 is: 4,181.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.91 : 7,435.17 = 3,030 : x
  2. Step 2: Convert to fraction form
    5,387.91/7,435.17 = 3,030/x
  3. Step 3: Cross multiply
    5,387.91x = 7,435.17 × 3,030
  4. Step 4: Simplify right side
    5,387.91x = 22,528,565.10
  5. Step 5: Solve for x
    x = 22,528,565.10/5,387.91
  6. Step 6: Final answer
    x = 4,181.32

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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.