Home / 8,155.76-12,233.64-2,312.40

Finding the Fourth Proportional to 8,155.76, 12,233.64 and 2,312.40

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Solution

The fourth proportional to 8,155.76, 12,233.64 and 2,312.40 is: 3,468.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.76 : 12,233.64 = 2,312.40 : x
  2. Step 2: Convert to fraction form
    8,155.76/12,233.64 = 2,312.40/x
  3. Step 3: Cross multiply
    8,155.76x = 12,233.64 × 2,312.40
  4. Step 4: Simplify right side
    8,155.76x = 28,289,069.14
  5. Step 5: Solve for x
    x = 28,289,069.14/8,155.76
  6. Step 6: Final answer
    x = 3,468.60

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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.