Home / 2,127.20-3,188.10-1,549.40

Finding the Fourth Proportional to 2,127.20, 3,188.10 and 1,549.40

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Solution

The fourth proportional to 2,127.20, 3,188.10 and 1,549.40 is: 2,322.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.20 : 3,188.10 = 1,549.40 : x
  2. Step 2: Convert to fraction form
    2,127.20/3,188.10 = 1,549.40/x
  3. Step 3: Cross multiply
    2,127.20x = 3,188.10 × 1,549.40
  4. Step 4: Simplify right side
    2,127.20x = 4,939,642.14
  5. Step 5: Solve for x
    x = 4,939,642.14/2,127.20
  6. Step 6: Final answer
    x = 2,322.13

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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.