Home / 1,864.32-2,572.12-1,118.56

Finding the Fourth Proportional to 1,864.32, 2,572.12 and 1,118.56

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Solution

The fourth proportional to 1,864.32, 2,572.12 and 1,118.56 is: 1,543.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.32 : 2,572.12 = 1,118.56 : x
  2. Step 2: Convert to fraction form
    1,864.32/2,572.12 = 1,118.56/x
  3. Step 3: Cross multiply
    1,864.32x = 2,572.12 × 1,118.56
  4. Step 4: Simplify right side
    1,864.32x = 2,877,070.55
  5. Step 5: Solve for x
    x = 2,877,070.55/1,864.32
  6. Step 6: Final answer
    x = 1,543.23

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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.