Home / 8,742.29-12,065.45-5,205.42

Finding the Fourth Proportional to 8,742.29, 12,065.45 and 5,205.42

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Solution

The fourth proportional to 8,742.29, 12,065.45 and 5,205.42 is: 7,184.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.29 : 12,065.45 = 5,205.42 : x
  2. Step 2: Convert to fraction form
    8,742.29/12,065.45 = 5,205.42/x
  3. Step 3: Cross multiply
    8,742.29x = 12,065.45 × 5,205.42
  4. Step 4: Simplify right side
    8,742.29x = 62,805,708.71
  5. Step 5: Solve for x
    x = 62,805,708.71/8,742.29
  6. Step 6: Final answer
    x = 7,184.13

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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.