Home / 8,689.45-11,991.30-4,710.49

Finding the Fourth Proportional to 8,689.45, 11,991.30 and 4,710.49

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Solution

The fourth proportional to 8,689.45, 11,991.30 and 4,710.49 is: 6,500.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.45 : 11,991.30 = 4,710.49 : x
  2. Step 2: Convert to fraction form
    8,689.45/11,991.30 = 4,710.49/x
  3. Step 3: Cross multiply
    8,689.45x = 11,991.30 × 4,710.49
  4. Step 4: Simplify right side
    8,689.45x = 56,484,898.74
  5. Step 5: Solve for x
    x = 56,484,898.74/8,689.45
  6. Step 6: Final answer
    x = 6,500.40

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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.