Home / 2,417.78-3,336.38-1,422.87

Finding the Fourth Proportional to 2,417.78, 3,336.38 and 1,422.87

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Solution

The fourth proportional to 2,417.78, 3,336.38 and 1,422.87 is: 1,963.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,417.78 : 3,336.38 = 1,422.87 : x
  2. Step 2: Convert to fraction form
    2,417.78/3,336.38 = 1,422.87/x
  3. Step 3: Cross multiply
    2,417.78x = 3,336.38 × 1,422.87
  4. Step 4: Simplify right side
    2,417.78x = 4,747,220.72
  5. Step 5: Solve for x
    x = 4,747,220.72/2,417.78
  6. Step 6: Final answer
    x = 1,963.46

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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.