Home / 1,581.32-2,181.94-1,110.66

Finding the Fourth Proportional to 1,581.32, 2,181.94 and 1,110.66

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Solution

The fourth proportional to 1,581.32, 2,181.94 and 1,110.66 is: 1,532.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.32 : 2,181.94 = 1,110.66 : x
  2. Step 2: Convert to fraction form
    1,581.32/2,181.94 = 1,110.66/x
  3. Step 3: Cross multiply
    1,581.32x = 2,181.94 × 1,110.66
  4. Step 4: Simplify right side
    1,581.32x = 2,423,382.52
  5. Step 5: Solve for x
    x = 2,423,382.52/1,581.32
  6. Step 6: Final answer
    x = 1,532.50

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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.