Home / 2,280.87-3,147.98-1,397.16

Finding the Fourth Proportional to 2,280.87, 3,147.98 and 1,397.16

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Solution

The fourth proportional to 2,280.87, 3,147.98 and 1,397.16 is: 1,928.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.87 : 3,147.98 = 1,397.16 : x
  2. Step 2: Convert to fraction form
    2,280.87/3,147.98 = 1,397.16/x
  3. Step 3: Cross multiply
    2,280.87x = 3,147.98 × 1,397.16
  4. Step 4: Simplify right side
    2,280.87x = 4,398,224.75
  5. Step 5: Solve for x
    x = 4,398,224.75/2,280.87
  6. Step 6: Final answer
    x = 1,928.31

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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.