Home / 8,689.28-11,991.20-4,710.39

Finding the Fourth Proportional to 8,689.28, 11,991.20 and 4,710.39

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Solution

The fourth proportional to 8,689.28, 11,991.20 and 4,710.39 is: 6,500.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.28 : 11,991.20 = 4,710.39 : x
  2. Step 2: Convert to fraction form
    8,689.28/11,991.20 = 4,710.39/x
  3. Step 3: Cross multiply
    8,689.28x = 11,991.20 × 4,710.39
  4. Step 4: Simplify right side
    8,689.28x = 56,483,205.02
  5. Step 5: Solve for x
    x = 56,483,205.02/8,689.28
  6. Step 6: Final answer
    x = 6,500.34

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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.