Home / 7,776.72-10,731.84-4,239.90

Finding the Fourth Proportional to 7,776.72, 10,731.84 and 4,239.90

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Solution

The fourth proportional to 7,776.72, 10,731.84 and 4,239.90 is: 5,851.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,776.72 : 10,731.84 = 4,239.90 : x
  2. Step 2: Convert to fraction form
    7,776.72/10,731.84 = 4,239.90/x
  3. Step 3: Cross multiply
    7,776.72x = 10,731.84 × 4,239.90
  4. Step 4: Simplify right side
    7,776.72x = 45,501,928.42
  5. Step 5: Solve for x
    x = 45,501,928.42/7,776.72
  6. Step 6: Final answer
    x = 5,851.04

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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.