Home / 1,423.83-1,962.99-1,278.03

Finding the Fourth Proportional to 1,423.83, 1,962.99 and 1,278.03

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Solution

The fourth proportional to 1,423.83, 1,962.99 and 1,278.03 is: 1,761.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.83 : 1,962.99 = 1,278.03 : x
  2. Step 2: Convert to fraction form
    1,423.83/1,962.99 = 1,278.03/x
  3. Step 3: Cross multiply
    1,423.83x = 1,962.99 × 1,278.03
  4. Step 4: Simplify right side
    1,423.83x = 2,508,760.11
  5. Step 5: Solve for x
    x = 2,508,760.11/1,423.83
  6. Step 6: Final answer
    x = 1,761.98

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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.