Home / 1,787.30-2,678.88-1,057.49

Finding the Fourth Proportional to 1,787.30, 2,678.88 and 1,057.49

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Solution

The fourth proportional to 1,787.30, 2,678.88 and 1,057.49 is: 1,585.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.30 : 2,678.88 = 1,057.49 : x
  2. Step 2: Convert to fraction form
    1,787.30/2,678.88 = 1,057.49/x
  3. Step 3: Cross multiply
    1,787.30x = 2,678.88 × 1,057.49
  4. Step 4: Simplify right side
    1,787.30x = 2,832,888.81
  5. Step 5: Solve for x
    x = 2,832,888.81/1,787.30
  6. Step 6: Final answer
    x = 1,585.01

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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.