Home / 3,115.60-4,299.45-1,718.32

Finding the Fourth Proportional to 3,115.60, 4,299.45 and 1,718.32

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Solution

The fourth proportional to 3,115.60, 4,299.45 and 1,718.32 is: 2,371.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.60 : 4,299.45 = 1,718.32 : x
  2. Step 2: Convert to fraction form
    3,115.60/4,299.45 = 1,718.32/x
  3. Step 3: Cross multiply
    3,115.60x = 4,299.45 × 1,718.32
  4. Step 4: Simplify right side
    3,115.60x = 7,387,830.92
  5. Step 5: Solve for x
    x = 7,387,830.92/3,115.60
  6. Step 6: Final answer
    x = 2,371.24

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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.