Home / 8,689.12-11,990.96-4,710.24

Finding the Fourth Proportional to 8,689.12, 11,990.96 and 4,710.24

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Solution

The fourth proportional to 8,689.12, 11,990.96 and 4,710.24 is: 6,500.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.12 : 11,990.96 = 4,710.24 : x
  2. Step 2: Convert to fraction form
    8,689.12/11,990.96 = 4,710.24/x
  3. Step 3: Cross multiply
    8,689.12x = 11,990.96 × 4,710.24
  4. Step 4: Simplify right side
    8,689.12x = 56,480,299.43
  5. Step 5: Solve for x
    x = 56,480,299.43/8,689.12
  6. Step 6: Final answer
    x = 6,500.12

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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.