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Finding the Fourth Proportional to 1,848.13, 2,772.04 and 678.08

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Solution

The fourth proportional to 1,848.13, 2,772.04 and 678.08 is: 1,017.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,848.13 : 2,772.04 = 678.08 : x
  2. Step 2: Convert to fraction form
    1,848.13/2,772.04 = 678.08/x
  3. Step 3: Cross multiply
    1,848.13x = 2,772.04 × 678.08
  4. Step 4: Simplify right side
    1,848.13x = 1,879,672.43
  5. Step 5: Solve for x
    x = 1,879,672.43/1,848.13
  6. Step 6: Final answer
    x = 1,017.07

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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.