Home / 1,358.20-1,872.67-1,148

Finding the Fourth Proportional to 1,358.20, 1,872.67 and 1,148

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Solution

The fourth proportional to 1,358.20, 1,872.67 and 1,148 is: 1,582.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.20 : 1,872.67 = 1,148 : x
  2. Step 2: Convert to fraction form
    1,358.20/1,872.67 = 1,148/x
  3. Step 3: Cross multiply
    1,358.20x = 1,872.67 × 1,148
  4. Step 4: Simplify right side
    1,358.20x = 2,149,825.16
  5. Step 5: Solve for x
    x = 2,149,825.16/1,358.20
  6. Step 6: Final answer
    x = 1,582.85

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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.