Home / 1,674.18-2,311.02-1,115.13

Finding the Fourth Proportional to 1,674.18, 2,311.02 and 1,115.13

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Solution

The fourth proportional to 1,674.18, 2,311.02 and 1,115.13 is: 1,539.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.18 : 2,311.02 = 1,115.13 : x
  2. Step 2: Convert to fraction form
    1,674.18/2,311.02 = 1,115.13/x
  3. Step 3: Cross multiply
    1,674.18x = 2,311.02 × 1,115.13
  4. Step 4: Simplify right side
    1,674.18x = 2,577,087.73
  5. Step 5: Solve for x
    x = 2,577,087.73/1,674.18
  6. Step 6: Final answer
    x = 1,539.31

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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.