Home / 8,854.80-12,219.36-5,315.92

Finding the Fourth Proportional to 8,854.80, 12,219.36 and 5,315.92

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Solution

The fourth proportional to 8,854.80, 12,219.36 and 5,315.92 is: 7,335.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,854.80 : 12,219.36 = 5,315.92 : x
  2. Step 2: Convert to fraction form
    8,854.80/12,219.36 = 5,315.92/x
  3. Step 3: Cross multiply
    8,854.80x = 12,219.36 × 5,315.92
  4. Step 4: Simplify right side
    8,854.80x = 64,957,140.21
  5. Step 5: Solve for x
    x = 64,957,140.21/8,854.80
  6. Step 6: Final answer
    x = 7,335.81

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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.