Home / 1,878.26-2,807.79-1,386.74

Finding the Fourth Proportional to 1,878.26, 2,807.79 and 1,386.74

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Solution

The fourth proportional to 1,878.26, 2,807.79 and 1,386.74 is: 2,073.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.26 : 2,807.79 = 1,386.74 : x
  2. Step 2: Convert to fraction form
    1,878.26/2,807.79 = 1,386.74/x
  3. Step 3: Cross multiply
    1,878.26x = 2,807.79 × 1,386.74
  4. Step 4: Simplify right side
    1,878.26x = 3,893,667.77
  5. Step 5: Solve for x
    x = 3,893,667.77/1,878.26
  6. Step 6: Final answer
    x = 2,073.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.