Home / 3,187.16-4,781.70-1,543.40

Finding the Fourth Proportional to 3,187.16, 4,781.70 and 1,543.40

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Solution

The fourth proportional to 3,187.16, 4,781.70 and 1,543.40 is: 2,315.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.16 : 4,781.70 = 1,543.40 : x
  2. Step 2: Convert to fraction form
    3,187.16/4,781.70 = 1,543.40/x
  3. Step 3: Cross multiply
    3,187.16x = 4,781.70 × 1,543.40
  4. Step 4: Simplify right side
    3,187.16x = 7,380,051.87
  5. Step 5: Solve for x
    x = 7,380,051.87/3,187.16
  6. Step 6: Final answer
    x = 2,315.56

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1.5x scale

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.