Home / 2,925.80-4,388.70-2,652.20

Finding the Fourth Proportional to 2,925.80, 4,388.70 and 2,652.20

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Solution

The fourth proportional to 2,925.80, 4,388.70 and 2,652.20 is: 3,978.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,925.80 : 4,388.70 = 2,652.20 : x
  2. Step 2: Convert to fraction form
    2,925.80/4,388.70 = 2,652.20/x
  3. Step 3: Cross multiply
    2,925.80x = 4,388.70 × 2,652.20
  4. Step 4: Simplify right side
    2,925.80x = 11,639,710.14
  5. Step 5: Solve for x
    x = 11,639,710.14/2,925.80
  6. Step 6: Final answer
    x = 3,978.30

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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.