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Finding the Fourth Proportional to 2,578.24, 3,868.58 and 934.36

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Solution

The fourth proportional to 2,578.24, 3,868.58 and 934.36 is: 1,401.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.24 : 3,868.58 = 934.36 : x
  2. Step 2: Convert to fraction form
    2,578.24/3,868.58 = 934.36/x
  3. Step 3: Cross multiply
    2,578.24x = 3,868.58 × 934.36
  4. Step 4: Simplify right side
    2,578.24x = 3,614,646.41
  5. Step 5: Solve for x
    x = 3,614,646.41/2,578.24
  6. Step 6: Final answer
    x = 1,401.98

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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.