Home / 3,580.40-5,366.49-1,387.25

Finding the Fourth Proportional to 3,580.40, 5,366.49 and 1,387.25

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Solution

The fourth proportional to 3,580.40, 5,366.49 and 1,387.25 is: 2,079.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.40 : 5,366.49 = 1,387.25 : x
  2. Step 2: Convert to fraction form
    3,580.40/5,366.49 = 1,387.25/x
  3. Step 3: Cross multiply
    3,580.40x = 5,366.49 × 1,387.25
  4. Step 4: Simplify right side
    3,580.40x = 7,444,636.42
  5. Step 5: Solve for x
    x = 7,444,636.42/3,580.40
  6. Step 6: Final answer
    x = 2,079.28

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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.