Home / 7,148.08-9,862.42-4,123.12

Finding the Fourth Proportional to 7,148.08, 9,862.42 and 4,123.12

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Solution

The fourth proportional to 7,148.08, 9,862.42 and 4,123.12 is: 5,688.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,148.08 : 9,862.42 = 4,123.12 : x
  2. Step 2: Convert to fraction form
    7,148.08/9,862.42 = 4,123.12/x
  3. Step 3: Cross multiply
    7,148.08x = 9,862.42 × 4,123.12
  4. Step 4: Simplify right side
    7,148.08x = 40,663,941.15
  5. Step 5: Solve for x
    x = 40,663,941.15/7,148.08
  6. Step 6: Final answer
    x = 5,688.79

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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.