Home / 8,900.33-12,278.18-5,123.66

Finding the Fourth Proportional to 8,900.33, 12,278.18 and 5,123.66

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Solution

The fourth proportional to 8,900.33, 12,278.18 and 5,123.66 is: 7,068.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900.33 : 12,278.18 = 5,123.66 : x
  2. Step 2: Convert to fraction form
    8,900.33/12,278.18 = 5,123.66/x
  3. Step 3: Cross multiply
    8,900.33x = 12,278.18 × 5,123.66
  4. Step 4: Simplify right side
    8,900.33x = 62,909,171.16
  5. Step 5: Solve for x
    x = 62,909,171.16/8,900.33
  6. Step 6: Final answer
    x = 7,068.18

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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.