Home / 1,146.12-1,581.64-648.76

Finding the Fourth Proportional to 1,146.12, 1,581.64 and 648.76

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Solution

The fourth proportional to 1,146.12, 1,581.64 and 648.76 is: 895.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146.12 : 1,581.64 = 648.76 : x
  2. Step 2: Convert to fraction form
    1,146.12/1,581.64 = 648.76/x
  3. Step 3: Cross multiply
    1,146.12x = 1,581.64 × 648.76
  4. Step 4: Simplify right side
    1,146.12x = 1,026,104.77
  5. Step 5: Solve for x
    x = 1,026,104.77/1,146.12
  6. Step 6: Final answer
    x = 895.29

Related Problems

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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.