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Finding the Fourth Proportional to 7,655.94, 11,488.36 and 2,979.18

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Solution

The fourth proportional to 7,655.94, 11,488.36 and 2,979.18 is: 4,470.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,655.94 : 11,488.36 = 2,979.18 : x
  2. Step 2: Convert to fraction form
    7,655.94/11,488.36 = 2,979.18/x
  3. Step 3: Cross multiply
    7,655.94x = 11,488.36 × 2,979.18
  4. Step 4: Simplify right side
    7,655.94x = 34,225,884.90
  5. Step 5: Solve for x
    x = 34,225,884.90/7,655.94
  6. Step 6: Final answer
    x = 4,470.50

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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.