Home / 5,103.20-7,654.80-2,912.15

Finding the Fourth Proportional to 5,103.20, 7,654.80 and 2,912.15

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Solution

The fourth proportional to 5,103.20, 7,654.80 and 2,912.15 is: 4,368.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,103.20 : 7,654.80 = 2,912.15 : x
  2. Step 2: Convert to fraction form
    5,103.20/7,654.80 = 2,912.15/x
  3. Step 3: Cross multiply
    5,103.20x = 7,654.80 × 2,912.15
  4. Step 4: Simplify right side
    5,103.20x = 22,291,925.82
  5. Step 5: Solve for x
    x = 22,291,925.82/5,103.20
  6. Step 6: Final answer
    x = 4,368.23

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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.