Home / 5,139.40-7,717.20-2,952.40

Finding the Fourth Proportional to 5,139.40, 7,717.20 and 2,952.40

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Solution

The fourth proportional to 5,139.40, 7,717.20 and 2,952.40 is: 4,433.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.40 : 7,717.20 = 2,952.40 : x
  2. Step 2: Convert to fraction form
    5,139.40/7,717.20 = 2,952.40/x
  3. Step 3: Cross multiply
    5,139.40x = 7,717.20 × 2,952.40
  4. Step 4: Simplify right side
    5,139.40x = 22,784,261.28
  5. Step 5: Solve for x
    x = 22,784,261.28/5,139.40
  6. Step 6: Final answer
    x = 4,433.25

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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.