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Finding the Fourth Proportional to 7,679.40, 10,594.80 and 5,028.32

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Solution

The fourth proportional to 7,679.40, 10,594.80 and 5,028.32 is: 6,937.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.40 : 10,594.80 = 5,028.32 : x
  2. Step 2: Convert to fraction form
    7,679.40/10,594.80 = 5,028.32/x
  3. Step 3: Cross multiply
    7,679.40x = 10,594.80 × 5,028.32
  4. Step 4: Simplify right side
    7,679.40x = 53,274,044.74
  5. Step 5: Solve for x
    x = 53,274,044.74/7,679.40
  6. Step 6: Final answer
    x = 6,937.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.