Home / 8,686.20-11,986.97-4,707.28

Finding the Fourth Proportional to 8,686.20, 11,986.97 and 4,707.28

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Solution

The fourth proportional to 8,686.20, 11,986.97 and 4,707.28 is: 6,496.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.20 : 11,986.97 = 4,707.28 : x
  2. Step 2: Convert to fraction form
    8,686.20/11,986.97 = 4,707.28/x
  3. Step 3: Cross multiply
    8,686.20x = 11,986.97 × 4,707.28
  4. Step 4: Simplify right side
    8,686.20x = 56,426,024.14
  5. Step 5: Solve for x
    x = 56,426,024.14/8,686.20
  6. Step 6: Final answer
    x = 6,496.05

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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.