Home / 7,780.17-10,738.58-4,635.75

Finding the Fourth Proportional to 7,780.17, 10,738.58 and 4,635.75

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Solution

The fourth proportional to 7,780.17, 10,738.58 and 4,635.75 is: 6,398.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.17 : 10,738.58 = 4,635.75 : x
  2. Step 2: Convert to fraction form
    7,780.17/10,738.58 = 4,635.75/x
  3. Step 3: Cross multiply
    7,780.17x = 10,738.58 × 4,635.75
  4. Step 4: Simplify right side
    7,780.17x = 49,781,349.06
  5. Step 5: Solve for x
    x = 49,781,349.06/7,780.17
  6. Step 6: Final answer
    x = 6,398.49

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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.