Home / 9,278.18-12,801.95-5,918.85

Finding the Fourth Proportional to 9,278.18, 12,801.95 and 5,918.85

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Solution

The fourth proportional to 9,278.18, 12,801.95 and 5,918.85 is: 8,166.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,278.18 : 12,801.95 = 5,918.85 : x
  2. Step 2: Convert to fraction form
    9,278.18/12,801.95 = 5,918.85/x
  3. Step 3: Cross multiply
    9,278.18x = 12,801.95 × 5,918.85
  4. Step 4: Simplify right side
    9,278.18x = 75,772,792.16
  5. Step 5: Solve for x
    x = 75,772,792.16/9,278.18
  6. Step 6: Final answer
    x = 8,166.78

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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.