Home / 1,635.77-2,257.38-972.69

Finding the Fourth Proportional to 1,635.77, 2,257.38 and 972.69

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Solution

The fourth proportional to 1,635.77, 2,257.38 and 972.69 is: 1,342.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.77 : 2,257.38 = 972.69 : x
  2. Step 2: Convert to fraction form
    1,635.77/2,257.38 = 972.69/x
  3. Step 3: Cross multiply
    1,635.77x = 2,257.38 × 972.69
  4. Step 4: Simplify right side
    1,635.77x = 2,195,730.95
  5. Step 5: Solve for x
    x = 2,195,730.95/1,635.77
  6. Step 6: Final answer
    x = 1,342.33

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Double scale
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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.