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Finding the Fourth Proportional to 1,870.28, 2,805.92 and 1,666.28

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Solution

The fourth proportional to 1,870.28, 2,805.92 and 1,666.28 is: 2,499.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.28 : 2,805.92 = 1,666.28 : x
  2. Step 2: Convert to fraction form
    1,870.28/2,805.92 = 1,666.28/x
  3. Step 3: Cross multiply
    1,870.28x = 2,805.92 × 1,666.28
  4. Step 4: Simplify right side
    1,870.28x = 4,675,448.38
  5. Step 5: Solve for x
    x = 4,675,448.38/1,870.28
  6. Step 6: Final answer
    x = 2,499.87

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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.