Home / 3,931.29-5,897.80-1,299.60

Finding the Fourth Proportional to 3,931.29, 5,897.80 and 1,299.60

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Solution

The fourth proportional to 3,931.29, 5,897.80 and 1,299.60 is: 1,949.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.29 : 5,897.80 = 1,299.60 : x
  2. Step 2: Convert to fraction form
    3,931.29/5,897.80 = 1,299.60/x
  3. Step 3: Cross multiply
    3,931.29x = 5,897.80 × 1,299.60
  4. Step 4: Simplify right side
    3,931.29x = 7,664,780.88
  5. Step 5: Solve for x
    x = 7,664,780.88/3,931.29
  6. Step 6: Final answer
    x = 1,949.69

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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.