Home / 2,985.59-4,120.11-1,641.18

Finding the Fourth Proportional to 2,985.59, 4,120.11 and 1,641.18

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Solution

The fourth proportional to 2,985.59, 4,120.11 and 1,641.18 is: 2,264.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.59 : 4,120.11 = 1,641.18 : x
  2. Step 2: Convert to fraction form
    2,985.59/4,120.11 = 1,641.18/x
  3. Step 3: Cross multiply
    2,985.59x = 4,120.11 × 1,641.18
  4. Step 4: Simplify right side
    2,985.59x = 6,761,844.22
  5. Step 5: Solve for x
    x = 6,761,844.22/2,985.59
  6. Step 6: Final answer
    x = 2,264.83

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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.