Home / 1,580.32-2,178.52-1,248.22

Finding the Fourth Proportional to 1,580.32, 2,178.52 and 1,248.22

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Solution

The fourth proportional to 1,580.32, 2,178.52 and 1,248.22 is: 1,720.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.32 : 2,178.52 = 1,248.22 : x
  2. Step 2: Convert to fraction form
    1,580.32/2,178.52 = 1,248.22/x
  3. Step 3: Cross multiply
    1,580.32x = 2,178.52 × 1,248.22
  4. Step 4: Simplify right side
    1,580.32x = 2,719,272.23
  5. Step 5: Solve for x
    x = 2,719,272.23/1,580.32
  6. Step 6: Final answer
    x = 1,720.71

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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.