Home / 3,315.24-4,572.90-1,989.36

Finding the Fourth Proportional to 3,315.24, 4,572.90 and 1,989.36

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Solution

The fourth proportional to 3,315.24, 4,572.90 and 1,989.36 is: 2,744.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.24 : 4,572.90 = 1,989.36 : x
  2. Step 2: Convert to fraction form
    3,315.24/4,572.90 = 1,989.36/x
  3. Step 3: Cross multiply
    3,315.24x = 4,572.90 × 1,989.36
  4. Step 4: Simplify right side
    3,315.24x = 9,097,144.34
  5. Step 5: Solve for x
    x = 9,097,144.34/3,315.24
  6. Step 6: Final answer
    x = 2,744.04

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Double scale
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Similar ratio
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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.