Home / 8,686.45-11,987.21-4,707.50

Finding the Fourth Proportional to 8,686.45, 11,987.21 and 4,707.50

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Solution

The fourth proportional to 8,686.45, 11,987.21 and 4,707.50 is: 6,496.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.45 : 11,987.21 = 4,707.50 : x
  2. Step 2: Convert to fraction form
    8,686.45/11,987.21 = 4,707.50/x
  3. Step 3: Cross multiply
    8,686.45x = 11,987.21 × 4,707.50
  4. Step 4: Simplify right side
    8,686.45x = 56,429,742.91
  5. Step 5: Solve for x
    x = 56,429,742.91/8,686.45
  6. Step 6: Final answer
    x = 6,496.30

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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.