Home / 1,036.80-1,554.30-387.36

Finding the Fourth Proportional to 1,036.80, 1,554.30 and 387.36

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Solution

The fourth proportional to 1,036.80, 1,554.30 and 387.36 is: 580.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.80 : 1,554.30 = 387.36 : x
  2. Step 2: Convert to fraction form
    1,036.80/1,554.30 = 387.36/x
  3. Step 3: Cross multiply
    1,036.80x = 1,554.30 × 387.36
  4. Step 4: Simplify right side
    1,036.80x = 602,073.65
  5. Step 5: Solve for x
    x = 602,073.65/1,036.80
  6. Step 6: Final answer
    x = 580.70

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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.