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Finding the Fourth Proportional to 8,574.13, 12,865.02 and 5,453.30

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Solution

The fourth proportional to 8,574.13, 12,865.02 and 5,453.30 is: 8,182.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,574.13 : 12,865.02 = 5,453.30 : x
  2. Step 2: Convert to fraction form
    8,574.13/12,865.02 = 5,453.30/x
  3. Step 3: Cross multiply
    8,574.13x = 12,865.02 × 5,453.30
  4. Step 4: Simplify right side
    8,574.13x = 70,156,813.57
  5. Step 5: Solve for x
    x = 70,156,813.57/8,574.13
  6. Step 6: Final answer
    x = 8,182.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.