Home / 7,815.08-11,730.56-6,931.41

Finding the Fourth Proportional to 7,815.08, 11,730.56 and 6,931.41

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Solution

The fourth proportional to 7,815.08, 11,730.56 and 6,931.41 is: 10,404.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.08 : 11,730.56 = 6,931.41 : x
  2. Step 2: Convert to fraction form
    7,815.08/11,730.56 = 6,931.41/x
  3. Step 3: Cross multiply
    7,815.08x = 11,730.56 × 6,931.41
  4. Step 4: Simplify right side
    7,815.08x = 81,309,242.24
  5. Step 5: Solve for x
    x = 81,309,242.24/7,815.08
  6. Step 6: Final answer
    x = 10,404.14

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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.