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Finding the Fourth Proportional to 1,866.76, 2,572.62 and 1,533.16

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Solution

The fourth proportional to 1,866.76, 2,572.62 and 1,533.16 is: 2,112.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.76 : 2,572.62 = 1,533.16 : x
  2. Step 2: Convert to fraction form
    1,866.76/2,572.62 = 1,533.16/x
  3. Step 3: Cross multiply
    1,866.76x = 2,572.62 × 1,533.16
  4. Step 4: Simplify right side
    1,866.76x = 3,944,238.08
  5. Step 5: Solve for x
    x = 3,944,238.08/1,866.76
  6. Step 6: Final answer
    x = 2,112.88

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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.