Home / 2,911.53-4,364.76-1,988.88

Finding the Fourth Proportional to 2,911.53, 4,364.76 and 1,988.88

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Solution

The fourth proportional to 2,911.53, 4,364.76 and 1,988.88 is: 2,981.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.53 : 4,364.76 = 1,988.88 : x
  2. Step 2: Convert to fraction form
    2,911.53/4,364.76 = 1,988.88/x
  3. Step 3: Cross multiply
    2,911.53x = 4,364.76 × 1,988.88
  4. Step 4: Simplify right side
    2,911.53x = 8,680,983.87
  5. Step 5: Solve for x
    x = 8,680,983.87/2,911.53
  6. Step 6: Final answer
    x = 2,981.59

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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.