Home / 2,100.56-3,151.44-802.13

Finding the Fourth Proportional to 2,100.56, 3,151.44 and 802.13

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Solution

The fourth proportional to 2,100.56, 3,151.44 and 802.13 is: 1,203.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100.56 : 3,151.44 = 802.13 : x
  2. Step 2: Convert to fraction form
    2,100.56/3,151.44 = 802.13/x
  3. Step 3: Cross multiply
    2,100.56x = 3,151.44 × 802.13
  4. Step 4: Simplify right side
    2,100.56x = 2,527,848.81
  5. Step 5: Solve for x
    x = 2,527,848.81/2,100.56
  6. Step 6: Final answer
    x = 1,203.42

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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.