Home / 8,686.60-11,988.75-4,910.92

Finding the Fourth Proportional to 8,686.60, 11,988.75 and 4,910.92

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Solution

The fourth proportional to 8,686.60, 11,988.75 and 4,910.92 is: 6,777.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.60 : 11,988.75 = 4,910.92 : x
  2. Step 2: Convert to fraction form
    8,686.60/11,988.75 = 4,910.92/x
  3. Step 3: Cross multiply
    8,686.60x = 11,988.75 × 4,910.92
  4. Step 4: Simplify right side
    8,686.60x = 58,875,792.15
  5. Step 5: Solve for x
    x = 58,875,792.15/8,686.60
  6. Step 6: Final answer
    x = 6,777.77

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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.