Home / 4,320.64-5,954.16-3,139.84

Finding the Fourth Proportional to 4,320.64, 5,954.16 and 3,139.84

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Solution

The fourth proportional to 4,320.64, 5,954.16 and 3,139.84 is: 4,326.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,320.64 : 5,954.16 = 3,139.84 : x
  2. Step 2: Convert to fraction form
    4,320.64/5,954.16 = 3,139.84/x
  3. Step 3: Cross multiply
    4,320.64x = 5,954.16 × 3,139.84
  4. Step 4: Simplify right side
    4,320.64x = 18,695,109.73
  5. Step 5: Solve for x
    x = 18,695,109.73/4,320.64
  6. Step 6: Final answer
    x = 4,326.93

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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.