Home / 8,686.50-11,988.36-4,911.18

Finding the Fourth Proportional to 8,686.50, 11,988.36 and 4,911.18

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Solution

The fourth proportional to 8,686.50, 11,988.36 and 4,911.18 is: 6,777.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.50 : 11,988.36 = 4,911.18 : x
  2. Step 2: Convert to fraction form
    8,686.50/11,988.36 = 4,911.18/x
  3. Step 3: Cross multiply
    8,686.50x = 11,988.36 × 4,911.18
  4. Step 4: Simplify right side
    8,686.50x = 58,876,993.86
  5. Step 5: Solve for x
    x = 58,876,993.86/8,686.50
  6. Step 6: Final answer
    x = 6,777.99

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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.