Home / 7,780.12-10,736.13-4,422.46

Finding the Fourth Proportional to 7,780.12, 10,736.13 and 4,422.46

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Solution

The fourth proportional to 7,780.12, 10,736.13 and 4,422.46 is: 6,102.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.12 : 10,736.13 = 4,422.46 : x
  2. Step 2: Convert to fraction form
    7,780.12/10,736.13 = 4,422.46/x
  3. Step 3: Cross multiply
    7,780.12x = 10,736.13 × 4,422.46
  4. Step 4: Simplify right side
    7,780.12x = 47,480,105.48
  5. Step 5: Solve for x
    x = 47,480,105.48/7,780.12
  6. Step 6: Final answer
    x = 6,102.75

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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.