Home / 7,386.60-11,078.85-2,122.05

Finding the Fourth Proportional to 7,386.60, 11,078.85 and 2,122.05

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Solution

The fourth proportional to 7,386.60, 11,078.85 and 2,122.05 is: 3,182.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,386.60 : 11,078.85 = 2,122.05 : x
  2. Step 2: Convert to fraction form
    7,386.60/11,078.85 = 2,122.05/x
  3. Step 3: Cross multiply
    7,386.60x = 11,078.85 × 2,122.05
  4. Step 4: Simplify right side
    7,386.60x = 23,509,873.64
  5. Step 5: Solve for x
    x = 23,509,873.64/7,386.60
  6. Step 6: Final answer
    x = 3,182.77

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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.