Home / 1,802.95-2,487.88-1,331.10

Finding the Fourth Proportional to 1,802.95, 2,487.88 and 1,331.10

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Solution

The fourth proportional to 1,802.95, 2,487.88 and 1,331.10 is: 1,836.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802.95 : 2,487.88 = 1,331.10 : x
  2. Step 2: Convert to fraction form
    1,802.95/2,487.88 = 1,331.10/x
  3. Step 3: Cross multiply
    1,802.95x = 2,487.88 × 1,331.10
  4. Step 4: Simplify right side
    1,802.95x = 3,311,617.07
  5. Step 5: Solve for x
    x = 3,311,617.07/1,802.95
  6. Step 6: Final answer
    x = 1,836.78

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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.