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Finding the Fourth Proportional to 5,250.85, 7,880.72 and 2,479.51

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Solution

The fourth proportional to 5,250.85, 7,880.72 and 2,479.51 is: 3,721.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,250.85 : 7,880.72 = 2,479.51 : x
  2. Step 2: Convert to fraction form
    5,250.85/7,880.72 = 2,479.51/x
  3. Step 3: Cross multiply
    5,250.85x = 7,880.72 × 2,479.51
  4. Step 4: Simplify right side
    5,250.85x = 19,540,328.47
  5. Step 5: Solve for x
    x = 19,540,328.47/5,250.85
  6. Step 6: Final answer
    x = 3,721.36

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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.