Home / 7,487.72-10,333.64-4,131.20

Finding the Fourth Proportional to 7,487.72, 10,333.64 and 4,131.20

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Solution

The fourth proportional to 7,487.72, 10,333.64 and 4,131.20 is: 5,701.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,487.72 : 10,333.64 = 4,131.20 : x
  2. Step 2: Convert to fraction form
    7,487.72/10,333.64 = 4,131.20/x
  3. Step 3: Cross multiply
    7,487.72x = 10,333.64 × 4,131.20
  4. Step 4: Simplify right side
    7,487.72x = 42,690,312.91
  5. Step 5: Solve for x
    x = 42,690,312.91/7,487.72
  6. Step 6: Final answer
    x = 5,701.38

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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.