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Finding the Fourth Proportional to 2,113.57, 3,170.57 and 652.84

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Solution

The fourth proportional to 2,113.57, 3,170.57 and 652.84 is: 979.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.57 : 3,170.57 = 652.84 : x
  2. Step 2: Convert to fraction form
    2,113.57/3,170.57 = 652.84/x
  3. Step 3: Cross multiply
    2,113.57x = 3,170.57 × 652.84
  4. Step 4: Simplify right side
    2,113.57x = 2,069,874.92
  5. Step 5: Solve for x
    x = 2,069,874.92/2,113.57
  6. Step 6: Final answer
    x = 979.33

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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.