Home / 8,971.16-12,379.38-6,614.60

Finding the Fourth Proportional to 8,971.16, 12,379.38 and 6,614.60

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Solution

The fourth proportional to 8,971.16, 12,379.38 and 6,614.60 is: 9,127.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.16 : 12,379.38 = 6,614.60 : x
  2. Step 2: Convert to fraction form
    8,971.16/12,379.38 = 6,614.60/x
  3. Step 3: Cross multiply
    8,971.16x = 12,379.38 × 6,614.60
  4. Step 4: Simplify right side
    8,971.16x = 81,884,646.95
  5. Step 5: Solve for x
    x = 81,884,646.95/8,971.16
  6. Step 6: Final answer
    x = 9,127.54

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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.