Home / 8,908.74-12,292.05-6,783.78

Finding the Fourth Proportional to 8,908.74, 12,292.05 and 6,783.78

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Solution

The fourth proportional to 8,908.74, 12,292.05 and 6,783.78 is: 9,360.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.74 : 12,292.05 = 6,783.78 : x
  2. Step 2: Convert to fraction form
    8,908.74/12,292.05 = 6,783.78/x
  3. Step 3: Cross multiply
    8,908.74x = 12,292.05 × 6,783.78
  4. Step 4: Simplify right side
    8,908.74x = 83,386,562.95
  5. Step 5: Solve for x
    x = 83,386,562.95/8,908.74
  6. Step 6: Final answer
    x = 9,360.08

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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.