Home / 2,690.95-4,030.76-1,231.33

Finding the Fourth Proportional to 2,690.95, 4,030.76 and 1,231.33

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Solution

The fourth proportional to 2,690.95, 4,030.76 and 1,231.33 is: 1,844.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.95 : 4,030.76 = 1,231.33 : x
  2. Step 2: Convert to fraction form
    2,690.95/4,030.76 = 1,231.33/x
  3. Step 3: Cross multiply
    2,690.95x = 4,030.76 × 1,231.33
  4. Step 4: Simplify right side
    2,690.95x = 4,963,189.55
  5. Step 5: Solve for x
    x = 4,963,189.55/2,690.95
  6. Step 6: Final answer
    x = 1,844.40

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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.