Home / 9,018.19-13,528.55-2,778.71

Finding the Fourth Proportional to 9,018.19, 13,528.55 and 2,778.71

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Solution

The fourth proportional to 9,018.19, 13,528.55 and 2,778.71 is: 4,168.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,018.19 : 13,528.55 = 2,778.71 : x
  2. Step 2: Convert to fraction form
    9,018.19/13,528.55 = 2,778.71/x
  3. Step 3: Cross multiply
    9,018.19x = 13,528.55 × 2,778.71
  4. Step 4: Simplify right side
    9,018.19x = 37,591,856.47
  5. Step 5: Solve for x
    x = 37,591,856.47/9,018.19
  6. Step 6: Final answer
    x = 4,168.45

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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.