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Finding the Fourth Proportional to 8,762.55, 13,146.90 and 5,471.79

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Solution

The fourth proportional to 8,762.55, 13,146.90 and 5,471.79 is: 8,209.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.55 : 13,146.90 = 5,471.79 : x
  2. Step 2: Convert to fraction form
    8,762.55/13,146.90 = 5,471.79/x
  3. Step 3: Cross multiply
    8,762.55x = 13,146.90 × 5,471.79
  4. Step 4: Simplify right side
    8,762.55x = 71,937,075.95
  5. Step 5: Solve for x
    x = 71,937,075.95/8,762.55
  6. Step 6: Final answer
    x = 8,209.61

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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.