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Finding the Fourth Proportional to 1,729.84, 2,595.56 and 864.72

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Solution

The fourth proportional to 1,729.84, 2,595.56 and 864.72 is: 1,297.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.84 : 2,595.56 = 864.72 : x
  2. Step 2: Convert to fraction form
    1,729.84/2,595.56 = 864.72/x
  3. Step 3: Cross multiply
    1,729.84x = 2,595.56 × 864.72
  4. Step 4: Simplify right side
    1,729.84x = 2,244,432.64
  5. Step 5: Solve for x
    x = 2,244,432.64/1,729.84
  6. Step 6: Final answer
    x = 1,297.48

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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.