Home / 1,116.88-1,674.68-945.36

Finding the Fourth Proportional to 1,116.88, 1,674.68 and 945.36

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Solution

The fourth proportional to 1,116.88, 1,674.68 and 945.36 is: 1,417.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.88 : 1,674.68 = 945.36 : x
  2. Step 2: Convert to fraction form
    1,116.88/1,674.68 = 945.36/x
  3. Step 3: Cross multiply
    1,116.88x = 1,674.68 × 945.36
  4. Step 4: Simplify right side
    1,116.88x = 1,583,175.48
  5. Step 5: Solve for x
    x = 1,583,175.48/1,116.88
  6. Step 6: Final answer
    x = 1,417.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.