Home / 2,865.71-3,955.35-1,869.26

Finding the Fourth Proportional to 2,865.71, 3,955.35 and 1,869.26

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Solution

The fourth proportional to 2,865.71, 3,955.35 and 1,869.26 is: 2,580.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.71 : 3,955.35 = 1,869.26 : x
  2. Step 2: Convert to fraction form
    2,865.71/3,955.35 = 1,869.26/x
  3. Step 3: Cross multiply
    2,865.71x = 3,955.35 × 1,869.26
  4. Step 4: Simplify right side
    2,865.71x = 7,393,557.76
  5. Step 5: Solve for x
    x = 7,393,557.76/2,865.71
  6. Step 6: Final answer
    x = 2,580.01

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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.