Home / 8,918.07-12,306.90-5,141.21

Finding the Fourth Proportional to 8,918.07, 12,306.90 and 5,141.21

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Solution

The fourth proportional to 8,918.07, 12,306.90 and 5,141.21 is: 7,094.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.07 : 12,306.90 = 5,141.21 : x
  2. Step 2: Convert to fraction form
    8,918.07/12,306.90 = 5,141.21/x
  3. Step 3: Cross multiply
    8,918.07x = 12,306.90 × 5,141.21
  4. Step 4: Simplify right side
    8,918.07x = 63,272,357.35
  5. Step 5: Solve for x
    x = 63,272,357.35/8,918.07
  6. Step 6: Final answer
    x = 7,094.85

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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.