Home / 8,275.78-12,428.61-5,161.84

Finding the Fourth Proportional to 8,275.78, 12,428.61 and 5,161.84

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Solution

The fourth proportional to 8,275.78, 12,428.61 and 5,161.84 is: 7,752.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,275.78 : 12,428.61 = 5,161.84 : x
  2. Step 2: Convert to fraction form
    8,275.78/12,428.61 = 5,161.84/x
  3. Step 3: Cross multiply
    8,275.78x = 12,428.61 × 5,161.84
  4. Step 4: Simplify right side
    8,275.78x = 64,154,496.24
  5. Step 5: Solve for x
    x = 64,154,496.24/8,275.78
  6. Step 6: Final answer
    x = 7,752.08

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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.