Home / 1,395.76-2,097.66-1,381.12

Finding the Fourth Proportional to 1,395.76, 2,097.66 and 1,381.12

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Solution

The fourth proportional to 1,395.76, 2,097.66 and 1,381.12 is: 2,075.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.76 : 2,097.66 = 1,381.12 : x
  2. Step 2: Convert to fraction form
    1,395.76/2,097.66 = 1,381.12/x
  3. Step 3: Cross multiply
    1,395.76x = 2,097.66 × 1,381.12
  4. Step 4: Simplify right side
    1,395.76x = 2,897,120.18
  5. Step 5: Solve for x
    x = 2,897,120.18/1,395.76
  6. Step 6: Final answer
    x = 2,075.66

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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.