Home / 5,178.60-7,766.70-1,480.14

Finding the Fourth Proportional to 5,178.60, 7,766.70 and 1,480.14

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Solution

The fourth proportional to 5,178.60, 7,766.70 and 1,480.14 is: 2,219.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.60 : 7,766.70 = 1,480.14 : x
  2. Step 2: Convert to fraction form
    5,178.60/7,766.70 = 1,480.14/x
  3. Step 3: Cross multiply
    5,178.60x = 7,766.70 × 1,480.14
  4. Step 4: Simplify right side
    5,178.60x = 11,495,803.34
  5. Step 5: Solve for x
    x = 11,495,803.34/5,178.60
  6. Step 6: Final answer
    x = 2,219.87

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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.