Home / 7,864.88-10,854.20-4,328.80

Finding the Fourth Proportional to 7,864.88, 10,854.20 and 4,328.80

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Solution

The fourth proportional to 7,864.88, 10,854.20 and 4,328.80 is: 5,974.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,864.88 : 10,854.20 = 4,328.80 : x
  2. Step 2: Convert to fraction form
    7,864.88/10,854.20 = 4,328.80/x
  3. Step 3: Cross multiply
    7,864.88x = 10,854.20 × 4,328.80
  4. Step 4: Simplify right side
    7,864.88x = 46,985,660.96
  5. Step 5: Solve for x
    x = 46,985,660.96/7,864.88
  6. Step 6: Final answer
    x = 5,974.11

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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.