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Finding the Fourth Proportional to 9,342.86, 12,893.94 and 5,151.92

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Solution

The fourth proportional to 9,342.86, 12,893.94 and 5,151.92 is: 7,110.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,342.86 : 12,893.94 = 5,151.92 : x
  2. Step 2: Convert to fraction form
    9,342.86/12,893.94 = 5,151.92/x
  3. Step 3: Cross multiply
    9,342.86x = 12,893.94 × 5,151.92
  4. Step 4: Simplify right side
    9,342.86x = 66,428,482.90
  5. Step 5: Solve for x
    x = 66,428,482.90/9,342.86
  6. Step 6: Final answer
    x = 7,110.08

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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.