Home / 8,712.40-12,022.60-4,986.32

Finding the Fourth Proportional to 8,712.40, 12,022.60 and 4,986.32

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Solution

The fourth proportional to 8,712.40, 12,022.60 and 4,986.32 is: 6,880.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.40 : 12,022.60 = 4,986.32 : x
  2. Step 2: Convert to fraction form
    8,712.40/12,022.60 = 4,986.32/x
  3. Step 3: Cross multiply
    8,712.40x = 12,022.60 × 4,986.32
  4. Step 4: Simplify right side
    8,712.40x = 59,948,530.83
  5. Step 5: Solve for x
    x = 59,948,530.83/8,712.40
  6. Step 6: Final answer
    x = 6,880.83

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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.