Home / 7,911.13-10,918.15-4,554.08

Finding the Fourth Proportional to 7,911.13, 10,918.15 and 4,554.08

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Solution

The fourth proportional to 7,911.13, 10,918.15 and 4,554.08 is: 6,285.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.13 : 10,918.15 = 4,554.08 : x
  2. Step 2: Convert to fraction form
    7,911.13/10,918.15 = 4,554.08/x
  3. Step 3: Cross multiply
    7,911.13x = 10,918.15 × 4,554.08
  4. Step 4: Simplify right side
    7,911.13x = 49,722,105.78
  5. Step 5: Solve for x
    x = 49,722,105.78/7,911.13
  6. Step 6: Final answer
    x = 6,285.09

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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.