Home / 2,929.80-4,389.90-2,440.20

Finding the Fourth Proportional to 2,929.80, 4,389.90 and 2,440.20

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Solution

The fourth proportional to 2,929.80, 4,389.90 and 2,440.20 is: 3,656.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.80 : 4,389.90 = 2,440.20 : x
  2. Step 2: Convert to fraction form
    2,929.80/4,389.90 = 2,440.20/x
  3. Step 3: Cross multiply
    2,929.80x = 4,389.90 × 2,440.20
  4. Step 4: Simplify right side
    2,929.80x = 10,712,233.98
  5. Step 5: Solve for x
    x = 10,712,233.98/2,929.80
  6. Step 6: Final answer
    x = 3,656.30

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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.