Home / 7,486.90-10,331.87-4,129.86

Finding the Fourth Proportional to 7,486.90, 10,331.87 and 4,129.86

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Solution

The fourth proportional to 7,486.90, 10,331.87 and 4,129.86 is: 5,699.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.90 : 10,331.87 = 4,129.86 : x
  2. Step 2: Convert to fraction form
    7,486.90/10,331.87 = 4,129.86/x
  3. Step 3: Cross multiply
    7,486.90x = 10,331.87 × 4,129.86
  4. Step 4: Simplify right side
    7,486.90x = 42,669,176.64
  5. Step 5: Solve for x
    x = 42,669,176.64/7,486.90
  6. Step 6: Final answer
    x = 5,699.18

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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.