Home / 2,780.02-4,161.32-1,543.45

Finding the Fourth Proportional to 2,780.02, 4,161.32 and 1,543.45

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Solution

The fourth proportional to 2,780.02, 4,161.32 and 1,543.45 is: 2,310.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.02 : 4,161.32 = 1,543.45 : x
  2. Step 2: Convert to fraction form
    2,780.02/4,161.32 = 1,543.45/x
  3. Step 3: Cross multiply
    2,780.02x = 4,161.32 × 1,543.45
  4. Step 4: Simplify right side
    2,780.02x = 6,422,781.64
  5. Step 5: Solve for x
    x = 6,422,781.64/2,780.02
  6. Step 6: Final answer
    x = 2,310.34

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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.