Home / 2,591.10-3,886.65-2,129.40

Finding the Fourth Proportional to 2,591.10, 3,886.65 and 2,129.40

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Solution

The fourth proportional to 2,591.10, 3,886.65 and 2,129.40 is: 3,194.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.10 : 3,886.65 = 2,129.40 : x
  2. Step 2: Convert to fraction form
    2,591.10/3,886.65 = 2,129.40/x
  3. Step 3: Cross multiply
    2,591.10x = 3,886.65 × 2,129.40
  4. Step 4: Simplify right side
    2,591.10x = 8,276,232.51
  5. Step 5: Solve for x
    x = 8,276,232.51/2,591.10
  6. Step 6: Final answer
    x = 3,194.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.