Home / 1,120.19-1,680.35-572.00

Finding the Fourth Proportional to 1,120.19, 1,680.35 and 572.00

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Solution

The fourth proportional to 1,120.19, 1,680.35 and 572.00 is: 858.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.19 : 1,680.35 = 572.00 : x
  2. Step 2: Convert to fraction form
    1,120.19/1,680.35 = 572.00/x
  3. Step 3: Cross multiply
    1,120.19x = 1,680.35 × 572.00
  4. Step 4: Simplify right side
    1,120.19x = 961,148.94
  5. Step 5: Solve for x
    x = 961,148.94/1,120.19
  6. Step 6: Final answer
    x = 858.03

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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.