Home / 5,254.32-7,880.40-2,479.80

Finding the Fourth Proportional to 5,254.32, 7,880.40 and 2,479.80

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Solution

The fourth proportional to 5,254.32, 7,880.40 and 2,479.80 is: 3,719.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,254.32 : 7,880.40 = 2,479.80 : x
  2. Step 2: Convert to fraction form
    5,254.32/7,880.40 = 2,479.80/x
  3. Step 3: Cross multiply
    5,254.32x = 7,880.40 × 2,479.80
  4. Step 4: Simplify right side
    5,254.32x = 19,541,815.92
  5. Step 5: Solve for x
    x = 19,541,815.92/5,254.32
  6. Step 6: Final answer
    x = 3,719.19

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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.