Home / 1,440.15-2,159.52-515.58

Finding the Fourth Proportional to 1,440.15, 2,159.52 and 515.58

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Solution

The fourth proportional to 1,440.15, 2,159.52 and 515.58 is: 773.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.15 : 2,159.52 = 515.58 : x
  2. Step 2: Convert to fraction form
    1,440.15/2,159.52 = 515.58/x
  3. Step 3: Cross multiply
    1,440.15x = 2,159.52 × 515.58
  4. Step 4: Simplify right side
    1,440.15x = 1,113,405.32
  5. Step 5: Solve for x
    x = 1,113,405.32/1,440.15
  6. Step 6: Final answer
    x = 773.12

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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.