Home / 9,315.26-12,854.80-5,123.52

Finding the Fourth Proportional to 9,315.26, 12,854.80 and 5,123.52

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Solution

The fourth proportional to 9,315.26, 12,854.80 and 5,123.52 is: 7,070.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.26 : 12,854.80 = 5,123.52 : x
  2. Step 2: Convert to fraction form
    9,315.26/12,854.80 = 5,123.52/x
  3. Step 3: Cross multiply
    9,315.26x = 12,854.80 × 5,123.52
  4. Step 4: Simplify right side
    9,315.26x = 65,861,824.90
  5. Step 5: Solve for x
    x = 65,861,824.90/9,315.26
  6. Step 6: Final answer
    x = 7,070.32

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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.