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Finding the Fourth Proportional to 1,807.20, 2,494.08 and 1,040.68

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Solution

The fourth proportional to 1,807.20, 2,494.08 and 1,040.68 is: 1,436.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807.20 : 2,494.08 = 1,040.68 : x
  2. Step 2: Convert to fraction form
    1,807.20/2,494.08 = 1,040.68/x
  3. Step 3: Cross multiply
    1,807.20x = 2,494.08 × 1,040.68
  4. Step 4: Simplify right side
    1,807.20x = 2,595,539.17
  5. Step 5: Solve for x
    x = 2,595,539.17/1,807.20
  6. Step 6: Final answer
    x = 1,436.22

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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.