Home / 8,723.78-12,037.65-5,185.70

Finding the Fourth Proportional to 8,723.78, 12,037.65 and 5,185.70

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Solution

The fourth proportional to 8,723.78, 12,037.65 and 5,185.70 is: 7,155.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,723.78 : 12,037.65 = 5,185.70 : x
  2. Step 2: Convert to fraction form
    8,723.78/12,037.65 = 5,185.70/x
  3. Step 3: Cross multiply
    8,723.78x = 12,037.65 × 5,185.70
  4. Step 4: Simplify right side
    8,723.78x = 62,423,641.61
  5. Step 5: Solve for x
    x = 62,423,641.61/8,723.78
  6. Step 6: Final answer
    x = 7,155.57

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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.