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Finding the Fourth Proportional to 30,862.72, 46,294.16 and 7,489.12

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Solution

The fourth proportional to 30,862.72, 46,294.16 and 7,489.12 is: 11,233.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,862.72 : 46,294.16 = 7,489.12 : x
  2. Step 2: Convert to fraction form
    30,862.72/46,294.16 = 7,489.12/x
  3. Step 3: Cross multiply
    30,862.72x = 46,294.16 × 7,489.12
  4. Step 4: Simplify right side
    30,862.72x = 346,702,519.54
  5. Step 5: Solve for x
    x = 346,702,519.54/30,862.72
  6. Step 6: Final answer
    x = 11,233.70

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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.