Home / 1,585.32-2,189.38-1,320.76

Finding the Fourth Proportional to 1,585.32, 2,189.38 and 1,320.76

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Solution

The fourth proportional to 1,585.32, 2,189.38 and 1,320.76 is: 1,824.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.32 : 2,189.38 = 1,320.76 : x
  2. Step 2: Convert to fraction form
    1,585.32/2,189.38 = 1,320.76/x
  3. Step 3: Cross multiply
    1,585.32x = 2,189.38 × 1,320.76
  4. Step 4: Simplify right side
    1,585.32x = 2,891,645.53
  5. Step 5: Solve for x
    x = 2,891,645.53/1,585.32
  6. Step 6: Final answer
    x = 1,824.01

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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.