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Finding the Fourth Proportional to 2,570.87, 3,855.62 and 927.11

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Solution

The fourth proportional to 2,570.87, 3,855.62 and 927.11 is: 1,390.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,570.87 : 3,855.62 = 927.11 : x
  2. Step 2: Convert to fraction form
    2,570.87/3,855.62 = 927.11/x
  3. Step 3: Cross multiply
    2,570.87x = 3,855.62 × 927.11
  4. Step 4: Simplify right side
    2,570.87x = 3,574,566.90
  5. Step 5: Solve for x
    x = 3,574,566.90/2,570.87
  6. Step 6: Final answer
    x = 1,390.41

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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.