Home / 1,869.08-2,576.41-1,398.87

Finding the Fourth Proportional to 1,869.08, 2,576.41 and 1,398.87

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Solution

The fourth proportional to 1,869.08, 2,576.41 and 1,398.87 is: 1,928.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.08 : 2,576.41 = 1,398.87 : x
  2. Step 2: Convert to fraction form
    1,869.08/2,576.41 = 1,398.87/x
  3. Step 3: Cross multiply
    1,869.08x = 2,576.41 × 1,398.87
  4. Step 4: Simplify right side
    1,869.08x = 3,604,059.16
  5. Step 5: Solve for x
    x = 3,604,059.16/1,869.08
  6. Step 6: Final answer
    x = 1,928.26

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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.