Home / 6,931.80-9,567.05-3,947.22

Finding the Fourth Proportional to 6,931.80, 9,567.05 and 3,947.22

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Solution

The fourth proportional to 6,931.80, 9,567.05 and 3,947.22 is: 5,447.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,931.80 : 9,567.05 = 3,947.22 : x
  2. Step 2: Convert to fraction form
    6,931.80/9,567.05 = 3,947.22/x
  3. Step 3: Cross multiply
    6,931.80x = 9,567.05 × 3,947.22
  4. Step 4: Simplify right side
    6,931.80x = 37,763,251.10
  5. Step 5: Solve for x
    x = 37,763,251.10/6,931.80
  6. Step 6: Final answer
    x = 5,447.83

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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.