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Finding the Fourth Proportional to 3,509.07, 5,265.92 and 1,866.79

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Solution

The fourth proportional to 3,509.07, 5,265.92 and 1,866.79 is: 2,801.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,509.07 : 5,265.92 = 1,866.79 : x
  2. Step 2: Convert to fraction form
    3,509.07/5,265.92 = 1,866.79/x
  3. Step 3: Cross multiply
    3,509.07x = 5,265.92 × 1,866.79
  4. Step 4: Simplify right side
    3,509.07x = 9,830,366.80
  5. Step 5: Solve for x
    x = 9,830,366.80/3,509.07
  6. Step 6: Final answer
    x = 2,801.42

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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.