Home / 4,320.20-5,953.56-3,139.40

Finding the Fourth Proportional to 4,320.20, 5,953.56 and 3,139.40

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Solution

The fourth proportional to 4,320.20, 5,953.56 and 3,139.40 is: 4,326.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,320.20 : 5,953.56 = 3,139.40 : x
  2. Step 2: Convert to fraction form
    4,320.20/5,953.56 = 3,139.40/x
  3. Step 3: Cross multiply
    4,320.20x = 5,953.56 × 3,139.40
  4. Step 4: Simplify right side
    4,320.20x = 18,690,605.45
  5. Step 5: Solve for x
    x = 18,690,605.45/4,320.20
  6. Step 6: Final answer
    x = 4,326.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.