Home / 8,900.48-12,281.02-5,123.79

Finding the Fourth Proportional to 8,900.48, 12,281.02 and 5,123.79

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Solution

The fourth proportional to 8,900.48, 12,281.02 and 5,123.79 is: 7,069.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900.48 : 12,281.02 = 5,123.79 : x
  2. Step 2: Convert to fraction form
    8,900.48/12,281.02 = 5,123.79/x
  3. Step 3: Cross multiply
    8,900.48x = 12,281.02 × 5,123.79
  4. Step 4: Simplify right side
    8,900.48x = 62,925,354.66
  5. Step 5: Solve for x
    x = 62,925,354.66/8,900.48
  6. Step 6: Final answer
    x = 7,069.88

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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.