Home / 1,543.48-2,315.21-1,311.82

Finding the Fourth Proportional to 1,543.48, 2,315.21 and 1,311.82

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Solution

The fourth proportional to 1,543.48, 2,315.21 and 1,311.82 is: 1,967.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.48 : 2,315.21 = 1,311.82 : x
  2. Step 2: Convert to fraction form
    1,543.48/2,315.21 = 1,311.82/x
  3. Step 3: Cross multiply
    1,543.48x = 2,315.21 × 1,311.82
  4. Step 4: Simplify right side
    1,543.48x = 3,037,126.44
  5. Step 5: Solve for x
    x = 3,037,126.44/1,543.48
  6. Step 6: Final answer
    x = 1,967.72

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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.