Home / 1,440.21-2,159.10-575.13

Finding the Fourth Proportional to 1,440.21, 2,159.10 and 575.13

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Solution

The fourth proportional to 1,440.21, 2,159.10 and 575.13 is: 862.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.21 : 2,159.10 = 575.13 : x
  2. Step 2: Convert to fraction form
    1,440.21/2,159.10 = 575.13/x
  3. Step 3: Cross multiply
    1,440.21x = 2,159.10 × 575.13
  4. Step 4: Simplify right side
    1,440.21x = 1,241,763.18
  5. Step 5: Solve for x
    x = 1,241,763.18/1,440.21
  6. Step 6: Final answer
    x = 862.21

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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.