Home / 2,572.40-3,549.90-1,393.46

Finding the Fourth Proportional to 2,572.40, 3,549.90 and 1,393.46

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Solution

The fourth proportional to 2,572.40, 3,549.90 and 1,393.46 is: 1,922.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.40 : 3,549.90 = 1,393.46 : x
  2. Step 2: Convert to fraction form
    2,572.40/3,549.90 = 1,393.46/x
  3. Step 3: Cross multiply
    2,572.40x = 3,549.90 × 1,393.46
  4. Step 4: Simplify right side
    2,572.40x = 4,946,643.65
  5. Step 5: Solve for x
    x = 4,946,643.65/2,572.40
  6. Step 6: Final answer
    x = 1,922.97

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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.