Home / 1,535.10-2,103.68-1,387.48

Finding the Fourth Proportional to 1,535.10, 2,103.68 and 1,387.48

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Solution

The fourth proportional to 1,535.10, 2,103.68 and 1,387.48 is: 1,901.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.10 : 2,103.68 = 1,387.48 : x
  2. Step 2: Convert to fraction form
    1,535.10/2,103.68 = 1,387.48/x
  3. Step 3: Cross multiply
    1,535.10x = 2,103.68 × 1,387.48
  4. Step 4: Simplify right side
    1,535.10x = 2,918,813.93
  5. Step 5: Solve for x
    x = 2,918,813.93/1,535.10
  6. Step 6: Final answer
    x = 1,901.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.