Home / 7,577.20-11,365.80-5,487.40

Finding the Fourth Proportional to 7,577.20, 11,365.80 and 5,487.40

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Solution

The fourth proportional to 7,577.20, 11,365.80 and 5,487.40 is: 8,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,577.20 : 11,365.80 = 5,487.40 : x
  2. Step 2: Convert to fraction form
    7,577.20/11,365.80 = 5,487.40/x
  3. Step 3: Cross multiply
    7,577.20x = 11,365.80 × 5,487.40
  4. Step 4: Simplify right side
    7,577.20x = 62,368,690.92
  5. Step 5: Solve for x
    x = 62,368,690.92/7,577.20
  6. Step 6: Final answer
    x = 8,231.10

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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.