Home / 1,394.20-2,091.72-572.04

Finding the Fourth Proportional to 1,394.20, 2,091.72 and 572.04

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Solution

The fourth proportional to 1,394.20, 2,091.72 and 572.04 is: 858.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.20 : 2,091.72 = 572.04 : x
  2. Step 2: Convert to fraction form
    1,394.20/2,091.72 = 572.04/x
  3. Step 3: Cross multiply
    1,394.20x = 2,091.72 × 572.04
  4. Step 4: Simplify right side
    1,394.20x = 1,196,547.51
  5. Step 5: Solve for x
    x = 1,196,547.51/1,394.20
  6. Step 6: Final answer
    x = 858.23

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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.