Home / 1,635.34-2,255.55-1,257.17

Finding the Fourth Proportional to 1,635.34, 2,255.55 and 1,257.17

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Solution

The fourth proportional to 1,635.34, 2,255.55 and 1,257.17 is: 1,733.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.34 : 2,255.55 = 1,257.17 : x
  2. Step 2: Convert to fraction form
    1,635.34/2,255.55 = 1,257.17/x
  3. Step 3: Cross multiply
    1,635.34x = 2,255.55 × 1,257.17
  4. Step 4: Simplify right side
    1,635.34x = 2,835,606.49
  5. Step 5: Solve for x
    x = 2,835,606.49/1,635.34
  6. Step 6: Final answer
    x = 1,733.96

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Half scale
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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.