Home / 2,569.26-3,545.57-1,390.35

Finding the Fourth Proportional to 2,569.26, 3,545.57 and 1,390.35

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Solution

The fourth proportional to 2,569.26, 3,545.57 and 1,390.35 is: 1,918.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,569.26 : 3,545.57 = 1,390.35 : x
  2. Step 2: Convert to fraction form
    2,569.26/3,545.57 = 1,390.35/x
  3. Step 3: Cross multiply
    2,569.26x = 3,545.57 × 1,390.35
  4. Step 4: Simplify right side
    2,569.26x = 4,929,586.73
  5. Step 5: Solve for x
    x = 4,929,586.73/2,569.26
  6. Step 6: Final answer
    x = 1,918.68

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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.