Home / 3,890.70-5,836.16-1,117.26

Finding the Fourth Proportional to 3,890.70, 5,836.16 and 1,117.26

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Solution

The fourth proportional to 3,890.70, 5,836.16 and 1,117.26 is: 1,675.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.70 : 5,836.16 = 1,117.26 : x
  2. Step 2: Convert to fraction form
    3,890.70/5,836.16 = 1,117.26/x
  3. Step 3: Cross multiply
    3,890.70x = 5,836.16 × 1,117.26
  4. Step 4: Simplify right side
    3,890.70x = 6,520,517.13
  5. Step 5: Solve for x
    x = 6,520,517.13/3,890.70
  6. Step 6: Final answer
    x = 1,675.92

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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.