Home / 2,159.90-2,979.06-1,403.87

Finding the Fourth Proportional to 2,159.90, 2,979.06 and 1,403.87

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Solution

The fourth proportional to 2,159.90, 2,979.06 and 1,403.87 is: 1,936.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.90 : 2,979.06 = 1,403.87 : x
  2. Step 2: Convert to fraction form
    2,159.90/2,979.06 = 1,403.87/x
  3. Step 3: Cross multiply
    2,159.90x = 2,979.06 × 1,403.87
  4. Step 4: Simplify right side
    2,159.90x = 4,182,212.96
  5. Step 5: Solve for x
    x = 4,182,212.96/2,159.90
  6. Step 6: Final answer
    x = 1,936.30

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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.