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Finding the Fourth Proportional to 1,352.85, 1,867.23 and 814.83

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Solution

The fourth proportional to 1,352.85, 1,867.23 and 814.83 is: 1,124.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,352.85 : 1,867.23 = 814.83 : x
  2. Step 2: Convert to fraction form
    1,352.85/1,867.23 = 814.83/x
  3. Step 3: Cross multiply
    1,352.85x = 1,867.23 × 814.83
  4. Step 4: Simplify right side
    1,352.85x = 1,521,475.02
  5. Step 5: Solve for x
    x = 1,521,475.02/1,352.85
  6. Step 6: Final answer
    x = 1,124.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.