Home / 7,487.05-10,331.97-4,129.81

Finding the Fourth Proportional to 7,487.05, 10,331.97 and 4,129.81

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Solution

The fourth proportional to 7,487.05, 10,331.97 and 4,129.81 is: 5,699.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,487.05 : 10,331.97 = 4,129.81 : x
  2. Step 2: Convert to fraction form
    7,487.05/10,331.97 = 4,129.81/x
  3. Step 3: Cross multiply
    7,487.05x = 10,331.97 × 4,129.81
  4. Step 4: Simplify right side
    7,487.05x = 42,669,073.03
  5. Step 5: Solve for x
    x = 42,669,073.03/7,487.05
  6. Step 6: Final answer
    x = 5,699.05

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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.