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Finding the Fourth Proportional to 8,860.70, 13,291.05 and 4,964.60

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Solution

The fourth proportional to 8,860.70, 13,291.05 and 4,964.60 is: 7,446.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.70 : 13,291.05 = 4,964.60 : x
  2. Step 2: Convert to fraction form
    8,860.70/13,291.05 = 4,964.60/x
  3. Step 3: Cross multiply
    8,860.70x = 13,291.05 × 4,964.60
  4. Step 4: Simplify right side
    8,860.70x = 65,984,746.83
  5. Step 5: Solve for x
    x = 65,984,746.83/8,860.70
  6. Step 6: Final answer
    x = 7,446.90

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Similar ratio
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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.