Home / 3,398.56-4,689.77-1,886.20

Finding the Fourth Proportional to 3,398.56, 4,689.77 and 1,886.20

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Solution

The fourth proportional to 3,398.56, 4,689.77 and 1,886.20 is: 2,602.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.56 : 4,689.77 = 1,886.20 : x
  2. Step 2: Convert to fraction form
    3,398.56/4,689.77 = 1,886.20/x
  3. Step 3: Cross multiply
    3,398.56x = 4,689.77 × 1,886.20
  4. Step 4: Simplify right side
    3,398.56x = 8,845,844.17
  5. Step 5: Solve for x
    x = 8,845,844.17/3,398.56
  6. Step 6: Final answer
    x = 2,602.82

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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.