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Finding the Fourth Proportional to 8,756.80, 13,125.12 and 4,377.40

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Solution

The fourth proportional to 8,756.80, 13,125.12 and 4,377.40 is: 6,561.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.80 : 13,125.12 = 4,377.40 : x
  2. Step 2: Convert to fraction form
    8,756.80/13,125.12 = 4,377.40/x
  3. Step 3: Cross multiply
    8,756.80x = 13,125.12 × 4,377.40
  4. Step 4: Simplify right side
    8,756.80x = 57,453,900.29
  5. Step 5: Solve for x
    x = 57,453,900.29/8,756.80
  6. Step 6: Final answer
    x = 6,561.06

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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.