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Finding the Fourth Proportional to 8,220.16, 12,352.56 and 4,326.40

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Solution

The fourth proportional to 8,220.16, 12,352.56 and 4,326.40 is: 6,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.16 : 12,352.56 = 4,326.40 : x
  2. Step 2: Convert to fraction form
    8,220.16/12,352.56 = 4,326.40/x
  3. Step 3: Cross multiply
    8,220.16x = 12,352.56 × 4,326.40
  4. Step 4: Simplify right side
    8,220.16x = 53,442,115.58
  5. Step 5: Solve for x
    x = 53,442,115.58/8,220.16
  6. Step 6: Final answer
    x = 6,501.35

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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.