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Finding the Fourth Proportional to 5,312.80, 7,966.80 and 2,024.80

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Solution

The fourth proportional to 5,312.80, 7,966.80 and 2,024.80 is: 3,036.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,312.80 : 7,966.80 = 2,024.80 : x
  2. Step 2: Convert to fraction form
    5,312.80/7,966.80 = 2,024.80/x
  3. Step 3: Cross multiply
    5,312.80x = 7,966.80 × 2,024.80
  4. Step 4: Simplify right side
    5,312.80x = 16,131,176.64
  5. Step 5: Solve for x
    x = 16,131,176.64/5,312.80
  6. Step 6: Final answer
    x = 3,036.29

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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.