Home / 7,910.78-10,917.29-4,554.08

Finding the Fourth Proportional to 7,910.78, 10,917.29 and 4,554.08

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Solution

The fourth proportional to 7,910.78, 10,917.29 and 4,554.08 is: 6,284.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.78 : 10,917.29 = 4,554.08 : x
  2. Step 2: Convert to fraction form
    7,910.78/10,917.29 = 4,554.08/x
  3. Step 3: Cross multiply
    7,910.78x = 10,917.29 × 4,554.08
  4. Step 4: Simplify right side
    7,910.78x = 49,718,184.17
  5. Step 5: Solve for x
    x = 49,718,184.17/7,910.78
  6. Step 6: Final answer
    x = 6,284.86

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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.