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Finding the Fourth Proportional to 5,570.87, 8,357.13 and 1,872.20

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Solution

The fourth proportional to 5,570.87, 8,357.13 and 1,872.20 is: 2,808.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,570.87 : 8,357.13 = 1,872.20 : x
  2. Step 2: Convert to fraction form
    5,570.87/8,357.13 = 1,872.20/x
  3. Step 3: Cross multiply
    5,570.87x = 8,357.13 × 1,872.20
  4. Step 4: Simplify right side
    5,570.87x = 15,646,177.00
  5. Step 5: Solve for x
    x = 15,646,177.00/5,570.87
  6. Step 6: Final answer
    x = 2,808.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.