Home / 7,186.20-10,779.30-5,436.60

Finding the Fourth Proportional to 7,186.20, 10,779.30 and 5,436.60

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Solution

The fourth proportional to 7,186.20, 10,779.30 and 5,436.60 is: 8,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186.20 : 10,779.30 = 5,436.60 : x
  2. Step 2: Convert to fraction form
    7,186.20/10,779.30 = 5,436.60/x
  3. Step 3: Cross multiply
    7,186.20x = 10,779.30 × 5,436.60
  4. Step 4: Simplify right side
    7,186.20x = 58,602,742.38
  5. Step 5: Solve for x
    x = 58,602,742.38/7,186.20
  6. Step 6: Final answer
    x = 8,154.90

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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.