Home / 2,285.75-3,154.32-1,237.80

Finding the Fourth Proportional to 2,285.75, 3,154.32 and 1,237.80

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Solution

The fourth proportional to 2,285.75, 3,154.32 and 1,237.80 is: 1,708.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.75 : 3,154.32 = 1,237.80 : x
  2. Step 2: Convert to fraction form
    2,285.75/3,154.32 = 1,237.80/x
  3. Step 3: Cross multiply
    2,285.75x = 3,154.32 × 1,237.80
  4. Step 4: Simplify right side
    2,285.75x = 3,904,417.30
  5. Step 5: Solve for x
    x = 3,904,417.30/2,285.75
  6. Step 6: Final answer
    x = 1,708.16

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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.