Home / 2,151.20-2,966.70-1,404.92

Finding the Fourth Proportional to 2,151.20, 2,966.70 and 1,404.92

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Solution

The fourth proportional to 2,151.20, 2,966.70 and 1,404.92 is: 1,937.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.20 : 2,966.70 = 1,404.92 : x
  2. Step 2: Convert to fraction form
    2,151.20/2,966.70 = 1,404.92/x
  3. Step 3: Cross multiply
    2,151.20x = 2,966.70 × 1,404.92
  4. Step 4: Simplify right side
    2,151.20x = 4,167,976.16
  5. Step 5: Solve for x
    x = 4,167,976.16/2,151.20
  6. Step 6: Final answer
    x = 1,937.51

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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.