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Finding the Fourth Proportional to 2,567.68, 3,855.36 and 1,031.68

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Solution

The fourth proportional to 2,567.68, 3,855.36 and 1,031.68 is: 1,549.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,567.68 : 3,855.36 = 1,031.68 : x
  2. Step 2: Convert to fraction form
    2,567.68/3,855.36 = 1,031.68/x
  3. Step 3: Cross multiply
    2,567.68x = 3,855.36 × 1,031.68
  4. Step 4: Simplify right side
    2,567.68x = 3,977,497.80
  5. Step 5: Solve for x
    x = 3,977,497.80/2,567.68
  6. Step 6: Final answer
    x = 1,549.06

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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.