Home / 7,207.68-10,815.57-3,312.39

Finding the Fourth Proportional to 7,207.68, 10,815.57 and 3,312.39

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Solution

The fourth proportional to 7,207.68, 10,815.57 and 3,312.39 is: 4,970.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,207.68 : 10,815.57 = 3,312.39 : x
  2. Step 2: Convert to fraction form
    7,207.68/10,815.57 = 3,312.39/x
  3. Step 3: Cross multiply
    7,207.68x = 10,815.57 × 3,312.39
  4. Step 4: Simplify right side
    7,207.68x = 35,825,385.91
  5. Step 5: Solve for x
    x = 35,825,385.91/7,207.68
  6. Step 6: Final answer
    x = 4,970.45

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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.