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Finding the Fourth Proportional to 28,718.86, 43,073.43 and 7,937.50

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Solution

The fourth proportional to 28,718.86, 43,073.43 and 7,937.50 is: 11,904.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.86 : 43,073.43 = 7,937.50 : x
  2. Step 2: Convert to fraction form
    28,718.86/43,073.43 = 7,937.50/x
  3. Step 3: Cross multiply
    28,718.86x = 43,073.43 × 7,937.50
  4. Step 4: Simplify right side
    28,718.86x = 341,895,350.63
  5. Step 5: Solve for x
    x = 341,895,350.63/28,718.86
  6. Step 6: Final answer
    x = 11,904.91

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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.