Home / 1,543.21-2,312.66-1,108.33

Finding the Fourth Proportional to 1,543.21, 2,312.66 and 1,108.33

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Solution

The fourth proportional to 1,543.21, 2,312.66 and 1,108.33 is: 1,660.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.21 : 2,312.66 = 1,108.33 : x
  2. Step 2: Convert to fraction form
    1,543.21/2,312.66 = 1,108.33/x
  3. Step 3: Cross multiply
    1,543.21x = 2,312.66 × 1,108.33
  4. Step 4: Simplify right side
    1,543.21x = 2,563,184.92
  5. Step 5: Solve for x
    x = 2,563,184.92/1,543.21
  6. Step 6: Final answer
    x = 1,660.94

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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.