Home / 1,159.12-1,599.58-635.15

Finding the Fourth Proportional to 1,159.12, 1,599.58 and 635.15

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Solution

The fourth proportional to 1,159.12, 1,599.58 and 635.15 is: 876.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159.12 : 1,599.58 = 635.15 : x
  2. Step 2: Convert to fraction form
    1,159.12/1,599.58 = 635.15/x
  3. Step 3: Cross multiply
    1,159.12x = 1,599.58 × 635.15
  4. Step 4: Simplify right side
    1,159.12x = 1,015,962.06
  5. Step 5: Solve for x
    x = 1,015,962.06/1,159.12
  6. Step 6: Final answer
    x = 876.50

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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.