Home / 2,569.66-3,546.11-1,390.70

Finding the Fourth Proportional to 2,569.66, 3,546.11 and 1,390.70

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Solution

The fourth proportional to 2,569.66, 3,546.11 and 1,390.70 is: 1,919.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,569.66 : 3,546.11 = 1,390.70 : x
  2. Step 2: Convert to fraction form
    2,569.66/3,546.11 = 1,390.70/x
  3. Step 3: Cross multiply
    2,569.66x = 3,546.11 × 1,390.70
  4. Step 4: Simplify right side
    2,569.66x = 4,931,587.52
  5. Step 5: Solve for x
    x = 4,931,587.52/2,569.66
  6. Step 6: Final answer
    x = 1,919.16

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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.