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Finding the Fourth Proportional to 1,729.30, 2,592.63 and 864.22

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Solution

The fourth proportional to 1,729.30, 2,592.63 and 864.22 is: 1,295.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.30 : 2,592.63 = 864.22 : x
  2. Step 2: Convert to fraction form
    1,729.30/2,592.63 = 864.22/x
  3. Step 3: Cross multiply
    1,729.30x = 2,592.63 × 864.22
  4. Step 4: Simplify right side
    1,729.30x = 2,240,602.70
  5. Step 5: Solve for x
    x = 2,240,602.70/1,729.30
  6. Step 6: Final answer
    x = 1,295.67

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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.