Home / 8,919.45-12,306.95-5,382.60

Finding the Fourth Proportional to 8,919.45, 12,306.95 and 5,382.60

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Solution

The fourth proportional to 8,919.45, 12,306.95 and 5,382.60 is: 7,426.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.45 : 12,306.95 = 5,382.60 : x
  2. Step 2: Convert to fraction form
    8,919.45/12,306.95 = 5,382.60/x
  3. Step 3: Cross multiply
    8,919.45x = 12,306.95 × 5,382.60
  4. Step 4: Simplify right side
    8,919.45x = 66,243,362.16
  5. Step 5: Solve for x
    x = 66,243,362.16/8,919.45
  6. Step 6: Final answer
    x = 7,426.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.