Home / 1,802.72-2,488.11-1,139.24

Finding the Fourth Proportional to 1,802.72, 2,488.11 and 1,139.24

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Solution

The fourth proportional to 1,802.72, 2,488.11 and 1,139.24 is: 1,572.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802.72 : 2,488.11 = 1,139.24 : x
  2. Step 2: Convert to fraction form
    1,802.72/2,488.11 = 1,139.24/x
  3. Step 3: Cross multiply
    1,802.72x = 2,488.11 × 1,139.24
  4. Step 4: Simplify right side
    1,802.72x = 2,834,554.44
  5. Step 5: Solve for x
    x = 2,834,554.44/1,802.72
  6. Step 6: Final answer
    x = 1,572.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.