Home / 5,426.19-8,140.50-2,138.40

Finding the Fourth Proportional to 5,426.19, 8,140.50 and 2,138.40

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Solution

The fourth proportional to 5,426.19, 8,140.50 and 2,138.40 is: 3,208.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.19 : 8,140.50 = 2,138.40 : x
  2. Step 2: Convert to fraction form
    5,426.19/8,140.50 = 2,138.40/x
  3. Step 3: Cross multiply
    5,426.19x = 8,140.50 × 2,138.40
  4. Step 4: Simplify right side
    5,426.19x = 17,407,645.20
  5. Step 5: Solve for x
    x = 17,407,645.20/5,426.19
  6. Step 6: Final answer
    x = 3,208.08

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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.