Home / 7,142.08-9,856.16-4,116.50

Finding the Fourth Proportional to 7,142.08, 9,856.16 and 4,116.50

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Solution

The fourth proportional to 7,142.08, 9,856.16 and 4,116.50 is: 5,680.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.08 : 9,856.16 = 4,116.50 : x
  2. Step 2: Convert to fraction form
    7,142.08/9,856.16 = 4,116.50/x
  3. Step 3: Cross multiply
    7,142.08x = 9,856.16 × 4,116.50
  4. Step 4: Simplify right side
    7,142.08x = 40,572,882.64
  5. Step 5: Solve for x
    x = 40,572,882.64/7,142.08
  6. Step 6: Final answer
    x = 5,680.82

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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.