Home / 1,862.16-2,569.68-1,115.68

Finding the Fourth Proportional to 1,862.16, 2,569.68 and 1,115.68

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Solution

The fourth proportional to 1,862.16, 2,569.68 and 1,115.68 is: 1,539.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,862.16 : 2,569.68 = 1,115.68 : x
  2. Step 2: Convert to fraction form
    1,862.16/2,569.68 = 1,115.68/x
  3. Step 3: Cross multiply
    1,862.16x = 2,569.68 × 1,115.68
  4. Step 4: Simplify right side
    1,862.16x = 2,866,940.58
  5. Step 5: Solve for x
    x = 2,866,940.58/1,862.16
  6. Step 6: Final answer
    x = 1,539.58

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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.