Home / 1,440.20-2,159.36-618.24

Finding the Fourth Proportional to 1,440.20, 2,159.36 and 618.24

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Solution

The fourth proportional to 1,440.20, 2,159.36 and 618.24 is: 926.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.20 : 2,159.36 = 618.24 : x
  2. Step 2: Convert to fraction form
    1,440.20/2,159.36 = 618.24/x
  3. Step 3: Cross multiply
    1,440.20x = 2,159.36 × 618.24
  4. Step 4: Simplify right side
    1,440.20x = 1,335,002.73
  5. Step 5: Solve for x
    x = 1,335,002.73/1,440.20
  6. Step 6: Final answer
    x = 926.96

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1.5x scale

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.