Home / 5,176.80-7,139.40-4,181.76

Finding the Fourth Proportional to 5,176.80, 7,139.40 and 4,181.76

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Solution

The fourth proportional to 5,176.80, 7,139.40 and 4,181.76 is: 5,767.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.80 : 7,139.40 = 4,181.76 : x
  2. Step 2: Convert to fraction form
    5,176.80/7,139.40 = 4,181.76/x
  3. Step 3: Cross multiply
    5,176.80x = 7,139.40 × 4,181.76
  4. Step 4: Simplify right side
    5,176.80x = 29,855,257.34
  5. Step 5: Solve for x
    x = 29,855,257.34/5,176.80
  6. Step 6: Final answer
    x = 5,767.13

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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.