Home / 2,972.16-4,097.88-2,381.76

Finding the Fourth Proportional to 2,972.16, 4,097.88 and 2,381.76

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Solution

The fourth proportional to 2,972.16, 4,097.88 and 2,381.76 is: 3,283.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.16 : 4,097.88 = 2,381.76 : x
  2. Step 2: Convert to fraction form
    2,972.16/4,097.88 = 2,381.76/x
  3. Step 3: Cross multiply
    2,972.16x = 4,097.88 × 2,381.76
  4. Step 4: Simplify right side
    2,972.16x = 9,760,166.67
  5. Step 5: Solve for x
    x = 9,760,166.67/2,972.16
  6. Step 6: Final answer
    x = 3,283.86

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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.