Home / 1,437.18-2,155.78-889.56

Finding the Fourth Proportional to 1,437.18, 2,155.78 and 889.56

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Solution

The fourth proportional to 1,437.18, 2,155.78 and 889.56 is: 1,334.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.18 : 2,155.78 = 889.56 : x
  2. Step 2: Convert to fraction form
    1,437.18/2,155.78 = 889.56/x
  3. Step 3: Cross multiply
    1,437.18x = 2,155.78 × 889.56
  4. Step 4: Simplify right side
    1,437.18x = 1,917,695.66
  5. Step 5: Solve for x
    x = 1,917,695.66/1,437.18
  6. Step 6: Final answer
    x = 1,334.35

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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.