Home / 2,557.85-3,836.65-802.81

Finding the Fourth Proportional to 2,557.85, 3,836.65 and 802.81

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Solution

The fourth proportional to 2,557.85, 3,836.65 and 802.81 is: 1,204.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.85 : 3,836.65 = 802.81 : x
  2. Step 2: Convert to fraction form
    2,557.85/3,836.65 = 802.81/x
  3. Step 3: Cross multiply
    2,557.85x = 3,836.65 × 802.81
  4. Step 4: Simplify right side
    2,557.85x = 3,080,100.99
  5. Step 5: Solve for x
    x = 3,080,100.99/2,557.85
  6. Step 6: Final answer
    x = 1,204.18

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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.