Home / 2,278.93-3,145.07-1,284.11

Finding the Fourth Proportional to 2,278.93, 3,145.07 and 1,284.11

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Solution

The fourth proportional to 2,278.93, 3,145.07 and 1,284.11 is: 1,772.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.93 : 3,145.07 = 1,284.11 : x
  2. Step 2: Convert to fraction form
    2,278.93/3,145.07 = 1,284.11/x
  3. Step 3: Cross multiply
    2,278.93x = 3,145.07 × 1,284.11
  4. Step 4: Simplify right side
    2,278.93x = 4,038,615.84
  5. Step 5: Solve for x
    x = 4,038,615.84/2,278.93
  6. Step 6: Final answer
    x = 1,772.15

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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.