Home / 1,535.88-2,119.92-1,012.68

Finding the Fourth Proportional to 1,535.88, 2,119.92 and 1,012.68

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Solution

The fourth proportional to 1,535.88, 2,119.92 and 1,012.68 is: 1,397.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.88 : 2,119.92 = 1,012.68 : x
  2. Step 2: Convert to fraction form
    1,535.88/2,119.92 = 1,012.68/x
  3. Step 3: Cross multiply
    1,535.88x = 2,119.92 × 1,012.68
  4. Step 4: Simplify right side
    1,535.88x = 2,146,800.59
  5. Step 5: Solve for x
    x = 2,146,800.59/1,535.88
  6. Step 6: Final answer
    x = 1,397.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.