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Finding the Fourth Proportional to 1,902.74, 2,854.41 and 807.12

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Solution

The fourth proportional to 1,902.74, 2,854.41 and 807.12 is: 1,210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.74 : 2,854.41 = 807.12 : x
  2. Step 2: Convert to fraction form
    1,902.74/2,854.41 = 807.12/x
  3. Step 3: Cross multiply
    1,902.74x = 2,854.41 × 807.12
  4. Step 4: Simplify right side
    1,902.74x = 2,303,851.40
  5. Step 5: Solve for x
    x = 2,303,851.40/1,902.74
  6. Step 6: Final answer
    x = 1,210.81

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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.