Home / 1,685.32-2,515.25-1,575.88

Finding the Fourth Proportional to 1,685.32, 2,515.25 and 1,575.88

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Solution

The fourth proportional to 1,685.32, 2,515.25 and 1,575.88 is: 2,351.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.32 : 2,515.25 = 1,575.88 : x
  2. Step 2: Convert to fraction form
    1,685.32/2,515.25 = 1,575.88/x
  3. Step 3: Cross multiply
    1,685.32x = 2,515.25 × 1,575.88
  4. Step 4: Simplify right side
    1,685.32x = 3,963,732.17
  5. Step 5: Solve for x
    x = 3,963,732.17/1,685.32
  6. Step 6: Final answer
    x = 2,351.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.