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Finding the Fourth Proportional to 6,756.84, 9,315.99 and 5,165.46

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Solution

The fourth proportional to 6,756.84, 9,315.99 and 5,165.46 is: 7,121.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,756.84 : 9,315.99 = 5,165.46 : x
  2. Step 2: Convert to fraction form
    6,756.84/9,315.99 = 5,165.46/x
  3. Step 3: Cross multiply
    6,756.84x = 9,315.99 × 5,165.46
  4. Step 4: Simplify right side
    6,756.84x = 48,121,373.71
  5. Step 5: Solve for x
    x = 48,121,373.71/6,756.84
  6. Step 6: Final answer
    x = 7,121.88

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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.