Home / 8,124.68-12,159.48-5,161.70

Finding the Fourth Proportional to 8,124.68, 12,159.48 and 5,161.70

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Solution

The fourth proportional to 8,124.68, 12,159.48 and 5,161.70 is: 7,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,124.68 : 12,159.48 = 5,161.70 : x
  2. Step 2: Convert to fraction form
    8,124.68/12,159.48 = 5,161.70/x
  3. Step 3: Cross multiply
    8,124.68x = 12,159.48 × 5,161.70
  4. Step 4: Simplify right side
    8,124.68x = 62,763,587.92
  5. Step 5: Solve for x
    x = 62,763,587.92/8,124.68
  6. Step 6: Final answer
    x = 7,725.05

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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.