Home / 7,990.28-11,026.08-4,405.05

Finding the Fourth Proportional to 7,990.28, 11,026.08 and 4,405.05

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Solution

The fourth proportional to 7,990.28, 11,026.08 and 4,405.05 is: 6,078.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.28 : 11,026.08 = 4,405.05 : x
  2. Step 2: Convert to fraction form
    7,990.28/11,026.08 = 4,405.05/x
  3. Step 3: Cross multiply
    7,990.28x = 11,026.08 × 4,405.05
  4. Step 4: Simplify right side
    7,990.28x = 48,570,378.57
  5. Step 5: Solve for x
    x = 48,570,378.57/7,990.28
  6. Step 6: Final answer
    x = 6,078.69

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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.