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Finding the Fourth Proportional to 2,175.24, 3,259.98 and 875.40

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Solution

The fourth proportional to 2,175.24, 3,259.98 and 875.40 is: 1,311.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.24 : 3,259.98 = 875.40 : x
  2. Step 2: Convert to fraction form
    2,175.24/3,259.98 = 875.40/x
  3. Step 3: Cross multiply
    2,175.24x = 3,259.98 × 875.40
  4. Step 4: Simplify right side
    2,175.24x = 2,853,786.49
  5. Step 5: Solve for x
    x = 2,853,786.49/2,175.24
  6. Step 6: Final answer
    x = 1,311.94

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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.