Home / 8,478.11-12,717.17-4,783.45

Finding the Fourth Proportional to 8,478.11, 12,717.17 and 4,783.45

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Solution

The fourth proportional to 8,478.11, 12,717.17 and 4,783.45 is: 7,175.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.11 : 12,717.17 = 4,783.45 : x
  2. Step 2: Convert to fraction form
    8,478.11/12,717.17 = 4,783.45/x
  3. Step 3: Cross multiply
    8,478.11x = 12,717.17 × 4,783.45
  4. Step 4: Simplify right side
    8,478.11x = 60,831,891.13
  5. Step 5: Solve for x
    x = 60,831,891.13/8,478.11
  6. Step 6: Final answer
    x = 7,175.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.