Home / 1,868.87-2,579.16-1,029.76

Finding the Fourth Proportional to 1,868.87, 2,579.16 and 1,029.76

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Solution

The fourth proportional to 1,868.87, 2,579.16 and 1,029.76 is: 1,421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.87 : 2,579.16 = 1,029.76 : x
  2. Step 2: Convert to fraction form
    1,868.87/2,579.16 = 1,029.76/x
  3. Step 3: Cross multiply
    1,868.87x = 2,579.16 × 1,029.76
  4. Step 4: Simplify right side
    1,868.87x = 2,655,906.78
  5. Step 5: Solve for x
    x = 2,655,906.78/1,868.87
  6. Step 6: Final answer
    x = 1,421.13

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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.