Home / 5,078.79-7,008.06-3,312.78

Finding the Fourth Proportional to 5,078.79, 7,008.06 and 3,312.78

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Solution

The fourth proportional to 5,078.79, 7,008.06 and 3,312.78 is: 4,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.79 : 7,008.06 = 3,312.78 : x
  2. Step 2: Convert to fraction form
    5,078.79/7,008.06 = 3,312.78/x
  3. Step 3: Cross multiply
    5,078.79x = 7,008.06 × 3,312.78
  4. Step 4: Simplify right side
    5,078.79x = 23,216,161.01
  5. Step 5: Solve for x
    x = 23,216,161.01/5,078.79
  6. Step 6: Final answer
    x = 4,571.20

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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.