Home / 1,581.12-2,177.20-1,488.76

Finding the Fourth Proportional to 1,581.12, 2,177.20 and 1,488.76

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Solution

The fourth proportional to 1,581.12, 2,177.20 and 1,488.76 is: 2,050.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.12 : 2,177.20 = 1,488.76 : x
  2. Step 2: Convert to fraction form
    1,581.12/2,177.20 = 1,488.76/x
  3. Step 3: Cross multiply
    1,581.12x = 2,177.20 × 1,488.76
  4. Step 4: Simplify right side
    1,581.12x = 3,241,328.27
  5. Step 5: Solve for x
    x = 3,241,328.27/1,581.12
  6. Step 6: Final answer
    x = 2,050.02

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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.