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Finding the Fourth Proportional to 2,658.34, 3,987.51 and 926.02

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Solution

The fourth proportional to 2,658.34, 3,987.51 and 926.02 is: 1,389.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.34 : 3,987.51 = 926.02 : x
  2. Step 2: Convert to fraction form
    2,658.34/3,987.51 = 926.02/x
  3. Step 3: Cross multiply
    2,658.34x = 3,987.51 × 926.02
  4. Step 4: Simplify right side
    2,658.34x = 3,692,514.01
  5. Step 5: Solve for x
    x = 3,692,514.01/2,658.34
  6. Step 6: Final answer
    x = 1,389.03

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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.