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Finding the Fourth Proportional to 8,708.16, 13,062.86 and 4,321.20

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Solution

The fourth proportional to 8,708.16, 13,062.86 and 4,321.20 is: 6,482.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.16 : 13,062.86 = 4,321.20 : x
  2. Step 2: Convert to fraction form
    8,708.16/13,062.86 = 4,321.20/x
  3. Step 3: Cross multiply
    8,708.16x = 13,062.86 × 4,321.20
  4. Step 4: Simplify right side
    8,708.16x = 56,447,230.63
  5. Step 5: Solve for x
    x = 56,447,230.63/8,708.16
  6. Step 6: Final answer
    x = 6,482.11

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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.