Home / 1,868.40-2,578.38-1,029.06

Finding the Fourth Proportional to 1,868.40, 2,578.38 and 1,029.06

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Solution

The fourth proportional to 1,868.40, 2,578.38 and 1,029.06 is: 1,420.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.40 : 2,578.38 = 1,029.06 : x
  2. Step 2: Convert to fraction form
    1,868.40/2,578.38 = 1,029.06/x
  3. Step 3: Cross multiply
    1,868.40x = 2,578.38 × 1,029.06
  4. Step 4: Simplify right side
    1,868.40x = 2,653,307.72
  5. Step 5: Solve for x
    x = 2,653,307.72/1,868.40
  6. Step 6: Final answer
    x = 1,420.10

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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.