Home / 8,898.57-12,280.94-5,121.87

Finding the Fourth Proportional to 8,898.57, 12,280.94 and 5,121.87

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Solution

The fourth proportional to 8,898.57, 12,280.94 and 5,121.87 is: 7,068.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.57 : 12,280.94 = 5,121.87 : x
  2. Step 2: Convert to fraction form
    8,898.57/12,280.94 = 5,121.87/x
  3. Step 3: Cross multiply
    8,898.57x = 12,280.94 × 5,121.87
  4. Step 4: Simplify right side
    8,898.57x = 62,901,378.16
  5. Step 5: Solve for x
    x = 62,901,378.16/8,898.57
  6. Step 6: Final answer
    x = 7,068.71

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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.