Home / 1,381.47-2,074.26-1,356.87

Finding the Fourth Proportional to 1,381.47, 2,074.26 and 1,356.87

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Solution

The fourth proportional to 1,381.47, 2,074.26 and 1,356.87 is: 2,037.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381.47 : 2,074.26 = 1,356.87 : x
  2. Step 2: Convert to fraction form
    1,381.47/2,074.26 = 1,356.87/x
  3. Step 3: Cross multiply
    1,381.47x = 2,074.26 × 1,356.87
  4. Step 4: Simplify right side
    1,381.47x = 2,814,494.38
  5. Step 5: Solve for x
    x = 2,814,494.38/1,381.47
  6. Step 6: Final answer
    x = 2,037.32

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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.