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Finding the Fourth Proportional to 8,210.80, 12,316.20 and 4,701.88

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Solution

The fourth proportional to 8,210.80, 12,316.20 and 4,701.88 is: 7,052.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,210.80 : 12,316.20 = 4,701.88 : x
  2. Step 2: Convert to fraction form
    8,210.80/12,316.20 = 4,701.88/x
  3. Step 3: Cross multiply
    8,210.80x = 12,316.20 × 4,701.88
  4. Step 4: Simplify right side
    8,210.80x = 57,909,294.46
  5. Step 5: Solve for x
    x = 57,909,294.46/8,210.80
  6. Step 6: Final answer
    x = 7,052.82

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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.