Home / 2,347.78-3,240.39-2,111.26

Finding the Fourth Proportional to 2,347.78, 3,240.39 and 2,111.26

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Solution

The fourth proportional to 2,347.78, 3,240.39 and 2,111.26 is: 2,913.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.78 : 3,240.39 = 2,111.26 : x
  2. Step 2: Convert to fraction form
    2,347.78/3,240.39 = 2,111.26/x
  3. Step 3: Cross multiply
    2,347.78x = 3,240.39 × 2,111.26
  4. Step 4: Simplify right side
    2,347.78x = 6,841,305.79
  5. Step 5: Solve for x
    x = 6,841,305.79/2,347.78
  6. Step 6: Final answer
    x = 2,913.95

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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.