Home / 7,715.98-10,648.06-4,179.20

Finding the Fourth Proportional to 7,715.98, 10,648.06 and 4,179.20

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Solution

The fourth proportional to 7,715.98, 10,648.06 and 4,179.20 is: 5,767.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.98 : 10,648.06 = 4,179.20 : x
  2. Step 2: Convert to fraction form
    7,715.98/10,648.06 = 4,179.20/x
  3. Step 3: Cross multiply
    7,715.98x = 10,648.06 × 4,179.20
  4. Step 4: Simplify right side
    7,715.98x = 44,500,308.66
  5. Step 5: Solve for x
    x = 44,500,308.66/7,715.98
  6. Step 6: Final answer
    x = 5,767.29

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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.