Home / 7,922.15-10,931.97-4,385.42

Finding the Fourth Proportional to 7,922.15, 10,931.97 and 4,385.42

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Solution

The fourth proportional to 7,922.15, 10,931.97 and 4,385.42 is: 6,051.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.15 : 10,931.97 = 4,385.42 : x
  2. Step 2: Convert to fraction form
    7,922.15/10,931.97 = 4,385.42/x
  3. Step 3: Cross multiply
    7,922.15x = 10,931.97 × 4,385.42
  4. Step 4: Simplify right side
    7,922.15x = 47,941,279.88
  5. Step 5: Solve for x
    x = 47,941,279.88/7,922.15
  6. Step 6: Final answer
    x = 6,051.55

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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.