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Finding the Fourth Proportional to 2,658.72, 3,987.76 and 1,548.76

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Solution

The fourth proportional to 2,658.72, 3,987.76 and 1,548.76 is: 2,322.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.72 : 3,987.76 = 1,548.76 : x
  2. Step 2: Convert to fraction form
    2,658.72/3,987.76 = 1,548.76/x
  3. Step 3: Cross multiply
    2,658.72x = 3,987.76 × 1,548.76
  4. Step 4: Simplify right side
    2,658.72x = 6,176,083.18
  5. Step 5: Solve for x
    x = 6,176,083.18/2,658.72
  6. Step 6: Final answer
    x = 2,322.95

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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.