Home / 5,148.40-7,722.60-4,929.70

Finding the Fourth Proportional to 5,148.40, 7,722.60 and 4,929.70

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Solution

The fourth proportional to 5,148.40, 7,722.60 and 4,929.70 is: 7,394.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.40 : 7,722.60 = 4,929.70 : x
  2. Step 2: Convert to fraction form
    5,148.40/7,722.60 = 4,929.70/x
  3. Step 3: Cross multiply
    5,148.40x = 7,722.60 × 4,929.70
  4. Step 4: Simplify right side
    5,148.40x = 38,070,101.22
  5. Step 5: Solve for x
    x = 38,070,101.22/5,148.40
  6. Step 6: Final answer
    x = 7,394.55

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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.