Home / 5,140.74-7,712.28-1,630.96

Finding the Fourth Proportional to 5,140.74, 7,712.28 and 1,630.96

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Solution

The fourth proportional to 5,140.74, 7,712.28 and 1,630.96 is: 2,446.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.74 : 7,712.28 = 1,630.96 : x
  2. Step 2: Convert to fraction form
    5,140.74/7,712.28 = 1,630.96/x
  3. Step 3: Cross multiply
    5,140.74x = 7,712.28 × 1,630.96
  4. Step 4: Simplify right side
    5,140.74x = 12,578,433.35
  5. Step 5: Solve for x
    x = 12,578,433.35/5,140.74
  6. Step 6: Final answer
    x = 2,446.81

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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.