Home / 7,487.12-10,331.79-4,129.94

Finding the Fourth Proportional to 7,487.12, 10,331.79 and 4,129.94

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Solution

The fourth proportional to 7,487.12, 10,331.79 and 4,129.94 is: 5,699.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,487.12 : 10,331.79 = 4,129.94 : x
  2. Step 2: Convert to fraction form
    7,487.12/10,331.79 = 4,129.94/x
  3. Step 3: Cross multiply
    7,487.12x = 10,331.79 × 4,129.94
  4. Step 4: Simplify right side
    7,487.12x = 42,669,672.79
  5. Step 5: Solve for x
    x = 42,669,672.79/7,487.12
  6. Step 6: Final answer
    x = 5,699.08

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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.