Home / 5,157.38-7,117.10-2,919.69

Finding the Fourth Proportional to 5,157.38, 7,117.10 and 2,919.69

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Solution

The fourth proportional to 5,157.38, 7,117.10 and 2,919.69 is: 4,029.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.38 : 7,117.10 = 2,919.69 : x
  2. Step 2: Convert to fraction form
    5,157.38/7,117.10 = 2,919.69/x
  3. Step 3: Cross multiply
    5,157.38x = 7,117.10 × 2,919.69
  4. Step 4: Simplify right side
    5,157.38x = 20,779,725.70
  5. Step 5: Solve for x
    x = 20,779,725.70/5,157.38
  6. Step 6: Final answer
    x = 4,029.12

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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.