Home / 2,690.42-4,036.08-841.72

Finding the Fourth Proportional to 2,690.42, 4,036.08 and 841.72

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Solution

The fourth proportional to 2,690.42, 4,036.08 and 841.72 is: 1,262.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.42 : 4,036.08 = 841.72 : x
  2. Step 2: Convert to fraction form
    2,690.42/4,036.08 = 841.72/x
  3. Step 3: Cross multiply
    2,690.42x = 4,036.08 × 841.72
  4. Step 4: Simplify right side
    2,690.42x = 3,397,249.26
  5. Step 5: Solve for x
    x = 3,397,249.26/2,690.42
  6. Step 6: Final answer
    x = 1,262.72

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1.5x scale

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.