Home / 8,813.05-12,162.38-5,275.57

Finding the Fourth Proportional to 8,813.05, 12,162.38 and 5,275.57

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Solution

The fourth proportional to 8,813.05, 12,162.38 and 5,275.57 is: 7,280.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.05 : 12,162.38 = 5,275.57 : x
  2. Step 2: Convert to fraction form
    8,813.05/12,162.38 = 5,275.57/x
  3. Step 3: Cross multiply
    8,813.05x = 12,162.38 × 5,275.57
  4. Step 4: Simplify right side
    8,813.05x = 64,163,487.06
  5. Step 5: Solve for x
    x = 64,163,487.06/8,813.05
  6. Step 6: Final answer
    x = 7,280.51

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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.