Home / 7,486.43-10,331.71-4,129.99

Finding the Fourth Proportional to 7,486.43, 10,331.71 and 4,129.99

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Solution

The fourth proportional to 7,486.43, 10,331.71 and 4,129.99 is: 5,699.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.43 : 10,331.71 = 4,129.99 : x
  2. Step 2: Convert to fraction form
    7,486.43/10,331.71 = 4,129.99/x
  3. Step 3: Cross multiply
    7,486.43x = 10,331.71 × 4,129.99
  4. Step 4: Simplify right side
    7,486.43x = 42,669,822.83
  5. Step 5: Solve for x
    x = 42,669,822.83/7,486.43
  6. Step 6: Final answer
    x = 5,699.63

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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.