Home / 8,729.87-12,045.35-5,192.39

Finding the Fourth Proportional to 8,729.87, 12,045.35 and 5,192.39

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Solution

The fourth proportional to 8,729.87, 12,045.35 and 5,192.39 is: 7,164.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.87 : 12,045.35 = 5,192.39 : x
  2. Step 2: Convert to fraction form
    8,729.87/12,045.35 = 5,192.39/x
  3. Step 3: Cross multiply
    8,729.87x = 12,045.35 × 5,192.39
  4. Step 4: Simplify right side
    8,729.87x = 62,544,068.70
  5. Step 5: Solve for x
    x = 62,544,068.70/8,729.87
  6. Step 6: Final answer
    x = 7,164.38

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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.