Home / 2,828.79-3,903.78-1,569.87

Finding the Fourth Proportional to 2,828.79, 3,903.78 and 1,569.87

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Solution

The fourth proportional to 2,828.79, 3,903.78 and 1,569.87 is: 2,166.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.79 : 3,903.78 = 1,569.87 : x
  2. Step 2: Convert to fraction form
    2,828.79/3,903.78 = 1,569.87/x
  3. Step 3: Cross multiply
    2,828.79x = 3,903.78 × 1,569.87
  4. Step 4: Simplify right side
    2,828.79x = 6,128,427.11
  5. Step 5: Solve for x
    x = 6,128,427.11/2,828.79
  6. Step 6: Final answer
    x = 2,166.45

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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.