Home / 1,357.24-1,872.06-914.92

Finding the Fourth Proportional to 1,357.24, 1,872.06 and 914.92

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Solution

The fourth proportional to 1,357.24, 1,872.06 and 914.92 is: 1,261.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.24 : 1,872.06 = 914.92 : x
  2. Step 2: Convert to fraction form
    1,357.24/1,872.06 = 914.92/x
  3. Step 3: Cross multiply
    1,357.24x = 1,872.06 × 914.92
  4. Step 4: Simplify right side
    1,357.24x = 1,712,785.14
  5. Step 5: Solve for x
    x = 1,712,785.14/1,357.24
  6. Step 6: Final answer
    x = 1,261.96

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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.