Home / 1,641.18-2,459.61-666.75

Finding the Fourth Proportional to 1,641.18, 2,459.61 and 666.75

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Solution

The fourth proportional to 1,641.18, 2,459.61 and 666.75 is: 999.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.18 : 2,459.61 = 666.75 : x
  2. Step 2: Convert to fraction form
    1,641.18/2,459.61 = 666.75/x
  3. Step 3: Cross multiply
    1,641.18x = 2,459.61 × 666.75
  4. Step 4: Simplify right side
    1,641.18x = 1,639,944.97
  5. Step 5: Solve for x
    x = 1,639,944.97/1,641.18
  6. Step 6: Final answer
    x = 999.25

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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.