Home / 7,748.76-10,721.42-6,756.10

Finding the Fourth Proportional to 7,748.76, 10,721.42 and 6,756.10

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Solution

The fourth proportional to 7,748.76, 10,721.42 and 6,756.10 is: 9,347.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,748.76 : 10,721.42 = 6,756.10 : x
  2. Step 2: Convert to fraction form
    7,748.76/10,721.42 = 6,756.10/x
  3. Step 3: Cross multiply
    7,748.76x = 10,721.42 × 6,756.10
  4. Step 4: Simplify right side
    7,748.76x = 72,434,985.66
  5. Step 5: Solve for x
    x = 72,434,985.66/7,748.76
  6. Step 6: Final answer
    x = 9,347.95

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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.