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Finding the Fourth Proportional to 1,866.12, 2,569.50 and 1,550.76

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Solution

The fourth proportional to 1,866.12, 2,569.50 and 1,550.76 is: 2,135.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.12 : 2,569.50 = 1,550.76 : x
  2. Step 2: Convert to fraction form
    1,866.12/2,569.50 = 1,550.76/x
  3. Step 3: Cross multiply
    1,866.12x = 2,569.50 × 1,550.76
  4. Step 4: Simplify right side
    1,866.12x = 3,984,677.82
  5. Step 5: Solve for x
    x = 3,984,677.82/1,866.12
  6. Step 6: Final answer
    x = 2,135.27

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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.