Home / 7,911.42-10,917.78-4,554.17

Finding the Fourth Proportional to 7,911.42, 10,917.78 and 4,554.17

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Solution

The fourth proportional to 7,911.42, 10,917.78 and 4,554.17 is: 6,284.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.42 : 10,917.78 = 4,554.17 : x
  2. Step 2: Convert to fraction form
    7,911.42/10,917.78 = 4,554.17/x
  3. Step 3: Cross multiply
    7,911.42x = 10,917.78 × 4,554.17
  4. Step 4: Simplify right side
    7,911.42x = 49,721,426.14
  5. Step 5: Solve for x
    x = 49,721,426.14/7,911.42
  6. Step 6: Final answer
    x = 6,284.77

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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.