Home / 1,387.32-2,065.51-1,367.93

Finding the Fourth Proportional to 1,387.32, 2,065.51 and 1,367.93

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Solution

The fourth proportional to 1,387.32, 2,065.51 and 1,367.93 is: 2,036.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387.32 : 2,065.51 = 1,367.93 : x
  2. Step 2: Convert to fraction form
    1,387.32/2,065.51 = 1,367.93/x
  3. Step 3: Cross multiply
    1,387.32x = 2,065.51 × 1,367.93
  4. Step 4: Simplify right side
    1,387.32x = 2,825,479.97
  5. Step 5: Solve for x
    x = 2,825,479.97/1,387.32
  6. Step 6: Final answer
    x = 2,036.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.