Home / 2,154.70-2,972.46-1,357.66

Finding the Fourth Proportional to 2,154.70, 2,972.46 and 1,357.66

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Solution

The fourth proportional to 2,154.70, 2,972.46 and 1,357.66 is: 1,872.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.70 : 2,972.46 = 1,357.66 : x
  2. Step 2: Convert to fraction form
    2,154.70/2,972.46 = 1,357.66/x
  3. Step 3: Cross multiply
    2,154.70x = 2,972.46 × 1,357.66
  4. Step 4: Simplify right side
    2,154.70x = 4,035,590.04
  5. Step 5: Solve for x
    x = 4,035,590.04/2,154.70
  6. Step 6: Final answer
    x = 1,872.92

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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.