Home / 2,158.40-3,237.42-1,117.28

Finding the Fourth Proportional to 2,158.40, 3,237.42 and 1,117.28

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Solution

The fourth proportional to 2,158.40, 3,237.42 and 1,117.28 is: 1,675.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.40 : 3,237.42 = 1,117.28 : x
  2. Step 2: Convert to fraction form
    2,158.40/3,237.42 = 1,117.28/x
  3. Step 3: Cross multiply
    2,158.40x = 3,237.42 × 1,117.28
  4. Step 4: Simplify right side
    2,158.40x = 3,617,104.62
  5. Step 5: Solve for x
    x = 3,617,104.62/2,158.40
  6. Step 6: Final answer
    x = 1,675.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.