Home / 5,265.12-7,897.65-1,979.76

Finding the Fourth Proportional to 5,265.12, 7,897.65 and 1,979.76

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Solution

The fourth proportional to 5,265.12, 7,897.65 and 1,979.76 is: 2,969.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,265.12 : 7,897.65 = 1,979.76 : x
  2. Step 2: Convert to fraction form
    5,265.12/7,897.65 = 1,979.76/x
  3. Step 3: Cross multiply
    5,265.12x = 7,897.65 × 1,979.76
  4. Step 4: Simplify right side
    5,265.12x = 15,635,451.56
  5. Step 5: Solve for x
    x = 15,635,451.56/5,265.12
  6. Step 6: Final answer
    x = 2,969.63

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1.5x scale

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.