Home / 2,166.17-2,988.20-1,281.65

Finding the Fourth Proportional to 2,166.17, 2,988.20 and 1,281.65

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Solution

The fourth proportional to 2,166.17, 2,988.20 and 1,281.65 is: 1,768.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.17 : 2,988.20 = 1,281.65 : x
  2. Step 2: Convert to fraction form
    2,166.17/2,988.20 = 1,281.65/x
  3. Step 3: Cross multiply
    2,166.17x = 2,988.20 × 1,281.65
  4. Step 4: Simplify right side
    2,166.17x = 3,829,805.18
  5. Step 5: Solve for x
    x = 3,829,805.18/2,166.17
  6. Step 6: Final answer
    x = 1,768.01

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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.