Home / 2,543.03-3,509.09-1,423.78

Finding the Fourth Proportional to 2,543.03, 3,509.09 and 1,423.78

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Solution

The fourth proportional to 2,543.03, 3,509.09 and 1,423.78 is: 1,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.03 : 3,509.09 = 1,423.78 : x
  2. Step 2: Convert to fraction form
    2,543.03/3,509.09 = 1,423.78/x
  3. Step 3: Cross multiply
    2,543.03x = 3,509.09 × 1,423.78
  4. Step 4: Simplify right side
    2,543.03x = 4,996,161.61
  5. Step 5: Solve for x
    x = 4,996,161.61/2,543.03
  6. Step 6: Final answer
    x = 1,964.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.