Home / 1,543.25-2,115.40-1,522.49

Finding the Fourth Proportional to 1,543.25, 2,115.40 and 1,522.49

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Solution

The fourth proportional to 1,543.25, 2,115.40 and 1,522.49 is: 2,086.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.25 : 2,115.40 = 1,522.49 : x
  2. Step 2: Convert to fraction form
    1,543.25/2,115.40 = 1,522.49/x
  3. Step 3: Cross multiply
    1,543.25x = 2,115.40 × 1,522.49
  4. Step 4: Simplify right side
    1,543.25x = 3,220,666.67
  5. Step 5: Solve for x
    x = 3,220,666.67/1,543.25
  6. Step 6: Final answer
    x = 2,086.94

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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.