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Finding the Fourth Proportional to 7,239.40, 10,859.40 and 2,308.90

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Solution

The fourth proportional to 7,239.40, 10,859.40 and 2,308.90 is: 3,463.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.40 : 10,859.40 = 2,308.90 : x
  2. Step 2: Convert to fraction form
    7,239.40/10,859.40 = 2,308.90/x
  3. Step 3: Cross multiply
    7,239.40x = 10,859.40 × 2,308.90
  4. Step 4: Simplify right side
    7,239.40x = 25,073,268.66
  5. Step 5: Solve for x
    x = 25,073,268.66/7,239.40
  6. Step 6: Final answer
    x = 3,463.45

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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.