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Finding the Fourth Proportional to 7,386.80, 11,082.02 and 6,779.30

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Solution

The fourth proportional to 7,386.80, 11,082.02 and 6,779.30 is: 10,170.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,386.80 : 11,082.02 = 6,779.30 : x
  2. Step 2: Convert to fraction form
    7,386.80/11,082.02 = 6,779.30/x
  3. Step 3: Cross multiply
    7,386.80x = 11,082.02 × 6,779.30
  4. Step 4: Simplify right side
    7,386.80x = 75,128,248.88
  5. Step 5: Solve for x
    x = 75,128,248.88/7,386.80
  6. Step 6: Final answer
    x = 10,170.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.