Home / 5,268.80-7,901.76-1,981.64

Finding the Fourth Proportional to 5,268.80, 7,901.76 and 1,981.64

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Solution

The fourth proportional to 5,268.80, 7,901.76 and 1,981.64 is: 2,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,268.80 : 7,901.76 = 1,981.64 : x
  2. Step 2: Convert to fraction form
    5,268.80/7,901.76 = 1,981.64/x
  3. Step 3: Cross multiply
    5,268.80x = 7,901.76 × 1,981.64
  4. Step 4: Simplify right side
    5,268.80x = 15,658,443.69
  5. Step 5: Solve for x
    x = 15,658,443.69/5,268.80
  6. Step 6: Final answer
    x = 2,971.92

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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.