Home / 8,077.40-11,142-4,928.12

Finding the Fourth Proportional to 8,077.40, 11,142 and 4,928.12

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Solution

The fourth proportional to 8,077.40, 11,142 and 4,928.12 is: 6,797.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,077.40 : 11,142 = 4,928.12 : x
  2. Step 2: Convert to fraction form
    8,077.40/11,142 = 4,928.12/x
  3. Step 3: Cross multiply
    8,077.40x = 11,142 × 4,928.12
  4. Step 4: Simplify right side
    8,077.40x = 54,909,113.04
  5. Step 5: Solve for x
    x = 54,909,113.04/8,077.40
  6. Step 6: Final answer
    x = 6,797.87

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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.