Home / 1,395.68-2,100.52-1,050.80

Finding the Fourth Proportional to 1,395.68, 2,100.52 and 1,050.80

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Solution

The fourth proportional to 1,395.68, 2,100.52 and 1,050.80 is: 1,581.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.68 : 2,100.52 = 1,050.80 : x
  2. Step 2: Convert to fraction form
    1,395.68/2,100.52 = 1,050.80/x
  3. Step 3: Cross multiply
    1,395.68x = 2,100.52 × 1,050.80
  4. Step 4: Simplify right side
    1,395.68x = 2,207,226.42
  5. Step 5: Solve for x
    x = 2,207,226.42/1,395.68
  6. Step 6: Final answer
    x = 1,581.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.