Home / 1,590.66-2,380.92-1,223.70

Finding the Fourth Proportional to 1,590.66, 2,380.92 and 1,223.70

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Solution

The fourth proportional to 1,590.66, 2,380.92 and 1,223.70 is: 1,831.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.66 : 2,380.92 = 1,223.70 : x
  2. Step 2: Convert to fraction form
    1,590.66/2,380.92 = 1,223.70/x
  3. Step 3: Cross multiply
    1,590.66x = 2,380.92 × 1,223.70
  4. Step 4: Simplify right side
    1,590.66x = 2,913,531.80
  5. Step 5: Solve for x
    x = 2,913,531.80/1,590.66
  6. Step 6: Final answer
    x = 1,831.65

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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.