Home / 7,155.40-10,732.74-1,961.32

Finding the Fourth Proportional to 7,155.40, 10,732.74 and 1,961.32

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Solution

The fourth proportional to 7,155.40, 10,732.74 and 1,961.32 is: 2,941.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.40 : 10,732.74 = 1,961.32 : x
  2. Step 2: Convert to fraction form
    7,155.40/10,732.74 = 1,961.32/x
  3. Step 3: Cross multiply
    7,155.40x = 10,732.74 × 1,961.32
  4. Step 4: Simplify right side
    7,155.40x = 21,050,337.62
  5. Step 5: Solve for x
    x = 21,050,337.62/7,155.40
  6. Step 6: Final answer
    x = 2,941.88

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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.