Home / 2,079.15-2,869.80-1,406.64

Finding the Fourth Proportional to 2,079.15, 2,869.80 and 1,406.64

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Solution

The fourth proportional to 2,079.15, 2,869.80 and 1,406.64 is: 1,941.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.15 : 2,869.80 = 1,406.64 : x
  2. Step 2: Convert to fraction form
    2,079.15/2,869.80 = 1,406.64/x
  3. Step 3: Cross multiply
    2,079.15x = 2,869.80 × 1,406.64
  4. Step 4: Simplify right side
    2,079.15x = 4,036,775.47
  5. Step 5: Solve for x
    x = 4,036,775.47/2,079.15
  6. Step 6: Final answer
    x = 1,941.55

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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.