Home / 5,490.18-7,574.04-3,131.46

Finding the Fourth Proportional to 5,490.18, 7,574.04 and 3,131.46

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Solution

The fourth proportional to 5,490.18, 7,574.04 and 3,131.46 is: 4,320.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.18 : 7,574.04 = 3,131.46 : x
  2. Step 2: Convert to fraction form
    5,490.18/7,574.04 = 3,131.46/x
  3. Step 3: Cross multiply
    5,490.18x = 7,574.04 × 3,131.46
  4. Step 4: Simplify right side
    5,490.18x = 23,717,803.30
  5. Step 5: Solve for x
    x = 23,717,803.30/5,490.18
  6. Step 6: Final answer
    x = 4,320.04

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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.