Home / 2,931.90-4,039.38-2,266.44

Finding the Fourth Proportional to 2,931.90, 4,039.38 and 2,266.44

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Solution

The fourth proportional to 2,931.90, 4,039.38 and 2,266.44 is: 3,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.90 : 4,039.38 = 2,266.44 : x
  2. Step 2: Convert to fraction form
    2,931.90/4,039.38 = 2,266.44/x
  3. Step 3: Cross multiply
    2,931.90x = 4,039.38 × 2,266.44
  4. Step 4: Simplify right side
    2,931.90x = 9,155,012.41
  5. Step 5: Solve for x
    x = 9,155,012.41/2,931.90
  6. Step 6: Final answer
    x = 3,122.55

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1.5x scale

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.