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Finding the Fourth Proportional to 2,382.78, 3,574.14 and 651.42

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Solution

The fourth proportional to 2,382.78, 3,574.14 and 651.42 is: 977.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,382.78 : 3,574.14 = 651.42 : x
  2. Step 2: Convert to fraction form
    2,382.78/3,574.14 = 651.42/x
  3. Step 3: Cross multiply
    2,382.78x = 3,574.14 × 651.42
  4. Step 4: Simplify right side
    2,382.78x = 2,328,266.28
  5. Step 5: Solve for x
    x = 2,328,266.28/2,382.78
  6. Step 6: Final answer
    x = 977.12

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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.