Home / 7,740.64-11,610.96-5,442.40

Finding the Fourth Proportional to 7,740.64, 11,610.96 and 5,442.40

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Solution

The fourth proportional to 7,740.64, 11,610.96 and 5,442.40 is: 8,163.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740.64 : 11,610.96 = 5,442.40 : x
  2. Step 2: Convert to fraction form
    7,740.64/11,610.96 = 5,442.40/x
  3. Step 3: Cross multiply
    7,740.64x = 11,610.96 × 5,442.40
  4. Step 4: Simplify right side
    7,740.64x = 63,191,488.70
  5. Step 5: Solve for x
    x = 63,191,488.70/7,740.64
  6. Step 6: Final answer
    x = 8,163.60

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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.