Home / 8,979.08-12,390.99-5,000.54

Finding the Fourth Proportional to 8,979.08, 12,390.99 and 5,000.54

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Solution

The fourth proportional to 8,979.08, 12,390.99 and 5,000.54 is: 6,900.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.08 : 12,390.99 = 5,000.54 : x
  2. Step 2: Convert to fraction form
    8,979.08/12,390.99 = 5,000.54/x
  3. Step 3: Cross multiply
    8,979.08x = 12,390.99 × 5,000.54
  4. Step 4: Simplify right side
    8,979.08x = 61,961,641.13
  5. Step 5: Solve for x
    x = 61,961,641.13/8,979.08
  6. Step 6: Final answer
    x = 6,900.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.