Home / 8,689.50-11,991.39-4,710.57

Finding the Fourth Proportional to 8,689.50, 11,991.39 and 4,710.57

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Solution

The fourth proportional to 8,689.50, 11,991.39 and 4,710.57 is: 6,500.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.50 : 11,991.39 = 4,710.57 : x
  2. Step 2: Convert to fraction form
    8,689.50/11,991.39 = 4,710.57/x
  3. Step 3: Cross multiply
    8,689.50x = 11,991.39 × 4,710.57
  4. Step 4: Simplify right side
    8,689.50x = 56,486,281.99
  5. Step 5: Solve for x
    x = 56,486,281.99/8,689.50
  6. Step 6: Final answer
    x = 6,500.52

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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.