Home / 5,112.40-7,657.80-4,565.20

Finding the Fourth Proportional to 5,112.40, 7,657.80 and 4,565.20

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Solution

The fourth proportional to 5,112.40, 7,657.80 and 4,565.20 is: 6,838.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.40 : 7,657.80 = 4,565.20 : x
  2. Step 2: Convert to fraction form
    5,112.40/7,657.80 = 4,565.20/x
  3. Step 3: Cross multiply
    5,112.40x = 7,657.80 × 4,565.20
  4. Step 4: Simplify right side
    5,112.40x = 34,959,388.56
  5. Step 5: Solve for x
    x = 34,959,388.56/5,112.40
  6. Step 6: Final answer
    x = 6,838.16

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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.