Home / 3,139.17-4,330.58-2,145.84

Finding the Fourth Proportional to 3,139.17, 4,330.58 and 2,145.84

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Solution

The fourth proportional to 3,139.17, 4,330.58 and 2,145.84 is: 2,960.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.17 : 4,330.58 = 2,145.84 : x
  2. Step 2: Convert to fraction form
    3,139.17/4,330.58 = 2,145.84/x
  3. Step 3: Cross multiply
    3,139.17x = 4,330.58 × 2,145.84
  4. Step 4: Simplify right side
    3,139.17x = 9,292,721.06
  5. Step 5: Solve for x
    x = 9,292,721.06/3,139.17
  6. Step 6: Final answer
    x = 2,960.25

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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.