Home / 1,559.12-2,150.62-929.24

Finding the Fourth Proportional to 1,559.12, 2,150.62 and 929.24

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Solution

The fourth proportional to 1,559.12, 2,150.62 and 929.24 is: 1,281.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.12 : 2,150.62 = 929.24 : x
  2. Step 2: Convert to fraction form
    1,559.12/2,150.62 = 929.24/x
  3. Step 3: Cross multiply
    1,559.12x = 2,150.62 × 929.24
  4. Step 4: Simplify right side
    1,559.12x = 1,998,437.12
  5. Step 5: Solve for x
    x = 1,998,437.12/1,559.12
  6. Step 6: Final answer
    x = 1,281.78

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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.