Home / 7,676.20-10,581.24-6,421.42

Finding the Fourth Proportional to 7,676.20, 10,581.24 and 6,421.42

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Solution

The fourth proportional to 7,676.20, 10,581.24 and 6,421.42 is: 8,851.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,676.20 : 10,581.24 = 6,421.42 : x
  2. Step 2: Convert to fraction form
    7,676.20/10,581.24 = 6,421.42/x
  3. Step 3: Cross multiply
    7,676.20x = 10,581.24 × 6,421.42
  4. Step 4: Simplify right side
    7,676.20x = 67,946,586.16
  5. Step 5: Solve for x
    x = 67,946,586.16/7,676.20
  6. Step 6: Final answer
    x = 8,851.59

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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.