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Finding the Fourth Proportional to 2,658.83, 3,988.37 and 1,015.13

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Solution

The fourth proportional to 2,658.83, 3,988.37 and 1,015.13 is: 1,522.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.83 : 3,988.37 = 1,015.13 : x
  2. Step 2: Convert to fraction form
    2,658.83/3,988.37 = 1,015.13/x
  3. Step 3: Cross multiply
    2,658.83x = 3,988.37 × 1,015.13
  4. Step 4: Simplify right side
    2,658.83x = 4,048,726.55
  5. Step 5: Solve for x
    x = 4,048,726.55/2,658.83
  6. Step 6: Final answer
    x = 1,522.75

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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.