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Finding the Fourth Proportional to 3,509.35, 5,265.57 and 1,865.50

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Solution

The fourth proportional to 3,509.35, 5,265.57 and 1,865.50 is: 2,799.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,509.35 : 5,265.57 = 1,865.50 : x
  2. Step 2: Convert to fraction form
    3,509.35/5,265.57 = 1,865.50/x
  3. Step 3: Cross multiply
    3,509.35x = 5,265.57 × 1,865.50
  4. Step 4: Simplify right side
    3,509.35x = 9,822,920.84
  5. Step 5: Solve for x
    x = 9,822,920.84/3,509.35
  6. Step 6: Final answer
    x = 2,799.07

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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.