Home / 5,170.21-7,131.69-4,508.65

Finding the Fourth Proportional to 5,170.21, 7,131.69 and 4,508.65

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Solution

The fourth proportional to 5,170.21, 7,131.69 and 4,508.65 is: 6,219.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.21 : 7,131.69 = 4,508.65 : x
  2. Step 2: Convert to fraction form
    5,170.21/7,131.69 = 4,508.65/x
  3. Step 3: Cross multiply
    5,170.21x = 7,131.69 × 4,508.65
  4. Step 4: Simplify right side
    5,170.21x = 32,154,294.12
  5. Step 5: Solve for x
    x = 32,154,294.12/5,170.21
  6. Step 6: Final answer
    x = 6,219.15

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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.