Home / 8,065.84-11,139.12-5,554.48

Finding the Fourth Proportional to 8,065.84, 11,139.12 and 5,554.48

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Solution

The fourth proportional to 8,065.84, 11,139.12 and 5,554.48 is: 7,670.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,065.84 : 11,139.12 = 5,554.48 : x
  2. Step 2: Convert to fraction form
    8,065.84/11,139.12 = 5,554.48/x
  3. Step 3: Cross multiply
    8,065.84x = 11,139.12 × 5,554.48
  4. Step 4: Simplify right side
    8,065.84x = 61,872,019.26
  5. Step 5: Solve for x
    x = 61,872,019.26/8,065.84
  6. Step 6: Final answer
    x = 7,670.87

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Half scale
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Similar ratio
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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.