Home / 8,756.28-12,083.19-4,978.92

Finding the Fourth Proportional to 8,756.28, 12,083.19 and 4,978.92

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Solution

The fourth proportional to 8,756.28, 12,083.19 and 4,978.92 is: 6,870.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.28 : 12,083.19 = 4,978.92 : x
  2. Step 2: Convert to fraction form
    8,756.28/12,083.19 = 4,978.92/x
  3. Step 3: Cross multiply
    8,756.28x = 12,083.19 × 4,978.92
  4. Step 4: Simplify right side
    8,756.28x = 60,161,236.35
  5. Step 5: Solve for x
    x = 60,161,236.35/8,756.28
  6. Step 6: Final answer
    x = 6,870.64

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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.