Home / 8,710.40-12,015.56-5,517.84

Finding the Fourth Proportional to 8,710.40, 12,015.56 and 5,517.84

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Solution

The fourth proportional to 8,710.40, 12,015.56 and 5,517.84 is: 7,611.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.40 : 12,015.56 = 5,517.84 : x
  2. Step 2: Convert to fraction form
    8,710.40/12,015.56 = 5,517.84/x
  3. Step 3: Cross multiply
    8,710.40x = 12,015.56 × 5,517.84
  4. Step 4: Simplify right side
    8,710.40x = 66,299,937.59
  5. Step 5: Solve for x
    x = 66,299,937.59/8,710.40
  6. Step 6: Final answer
    x = 7,611.58

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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.