Home / 8,775.09-12,105.39-6,381.35

Finding the Fourth Proportional to 8,775.09, 12,105.39 and 6,381.35

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Solution

The fourth proportional to 8,775.09, 12,105.39 and 6,381.35 is: 8,803.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.09 : 12,105.39 = 6,381.35 : x
  2. Step 2: Convert to fraction form
    8,775.09/12,105.39 = 6,381.35/x
  3. Step 3: Cross multiply
    8,775.09x = 12,105.39 × 6,381.35
  4. Step 4: Simplify right side
    8,775.09x = 77,248,730.48
  5. Step 5: Solve for x
    x = 77,248,730.48/8,775.09
  6. Step 6: Final answer
    x = 8,803.18

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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.