Home / 1,863.98-2,569.97-1,421.18

Finding the Fourth Proportional to 1,863.98, 2,569.97 and 1,421.18

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Solution

The fourth proportional to 1,863.98, 2,569.97 and 1,421.18 is: 1,959.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.98 : 2,569.97 = 1,421.18 : x
  2. Step 2: Convert to fraction form
    1,863.98/2,569.97 = 1,421.18/x
  3. Step 3: Cross multiply
    1,863.98x = 2,569.97 × 1,421.18
  4. Step 4: Simplify right side
    1,863.98x = 3,652,382.86
  5. Step 5: Solve for x
    x = 3,652,382.86/1,863.98
  6. Step 6: Final answer
    x = 1,959.45

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Double scale
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Similar ratio
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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.