Home / 2,690.28-4,036.80-1,322.28

Finding the Fourth Proportional to 2,690.28, 4,036.80 and 1,322.28

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Solution

The fourth proportional to 2,690.28, 4,036.80 and 1,322.28 is: 1,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.28 : 4,036.80 = 1,322.28 : x
  2. Step 2: Convert to fraction form
    2,690.28/4,036.80 = 1,322.28/x
  3. Step 3: Cross multiply
    2,690.28x = 4,036.80 × 1,322.28
  4. Step 4: Simplify right side
    2,690.28x = 5,337,779.90
  5. Step 5: Solve for x
    x = 5,337,779.90/2,690.28
  6. Step 6: Final answer
    x = 1,984.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.