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Finding the Fourth Proportional to 2,802.54, 3,866.70 and 1,808.39

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Solution

The fourth proportional to 2,802.54, 3,866.70 and 1,808.39 is: 2,495.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.54 : 3,866.70 = 1,808.39 : x
  2. Step 2: Convert to fraction form
    2,802.54/3,866.70 = 1,808.39/x
  3. Step 3: Cross multiply
    2,802.54x = 3,866.70 × 1,808.39
  4. Step 4: Simplify right side
    2,802.54x = 6,992,482.28
  5. Step 5: Solve for x
    x = 6,992,482.28/2,802.54
  6. Step 6: Final answer
    x = 2,495.05

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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.