Home / 8,870.80-13,306.20-7,777.30

Finding the Fourth Proportional to 8,870.80, 13,306.20 and 7,777.30

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Solution

The fourth proportional to 8,870.80, 13,306.20 and 7,777.30 is: 11,665.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,870.80 : 13,306.20 = 7,777.30 : x
  2. Step 2: Convert to fraction form
    8,870.80/13,306.20 = 7,777.30/x
  3. Step 3: Cross multiply
    8,870.80x = 13,306.20 × 7,777.30
  4. Step 4: Simplify right side
    8,870.80x = 103,486,309.26
  5. Step 5: Solve for x
    x = 103,486,309.26/8,870.80
  6. Step 6: Final answer
    x = 11,665.95

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.