Home / 5,117.60-7,670.28-2,189.68

Finding the Fourth Proportional to 5,117.60, 7,670.28 and 2,189.68

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Solution

The fourth proportional to 5,117.60, 7,670.28 and 2,189.68 is: 3,281.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.60 : 7,670.28 = 2,189.68 : x
  2. Step 2: Convert to fraction form
    5,117.60/7,670.28 = 2,189.68/x
  3. Step 3: Cross multiply
    5,117.60x = 7,670.28 × 2,189.68
  4. Step 4: Simplify right side
    5,117.60x = 16,795,458.71
  5. Step 5: Solve for x
    x = 16,795,458.71/5,117.60
  6. Step 6: Final answer
    x = 3,281.90

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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.