Home / 8,927.10-12,319.50-5,389.65

Finding the Fourth Proportional to 8,927.10, 12,319.50 and 5,389.65

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Solution

The fourth proportional to 8,927.10, 12,319.50 and 5,389.65 is: 7,437.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,927.10 : 12,319.50 = 5,389.65 : x
  2. Step 2: Convert to fraction form
    8,927.10/12,319.50 = 5,389.65/x
  3. Step 3: Cross multiply
    8,927.10x = 12,319.50 × 5,389.65
  4. Step 4: Simplify right side
    8,927.10x = 66,397,793.18
  5. Step 5: Solve for x
    x = 66,397,793.18/8,927.10
  6. Step 6: Final answer
    x = 7,437.78

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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.