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Finding the Fourth Proportional to 1,802.04, 2,720 and 1,802.04

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Solution

The fourth proportional to 1,802.04, 2,720 and 1,802.04 is: 2,720

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802.04 : 2,720 = 1,802.04 : x
  2. Step 2: Convert to fraction form
    1,802.04/2,720 = 1,802.04/x
  3. Step 3: Cross multiply
    1,802.04x = 2,720 × 1,802.04
  4. Step 4: Simplify right side
    1,802.04x = 4,901,548.80
  5. Step 5: Solve for x
    x = 4,901,548.80/1,802.04
  6. Step 6: Final answer
    x = 2,720

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.