Home / 8,880.72-12,241.71-6,639.18

Finding the Fourth Proportional to 8,880.72, 12,241.71 and 6,639.18

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Solution

The fourth proportional to 8,880.72, 12,241.71 and 6,639.18 is: 9,151.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.72 : 12,241.71 = 6,639.18 : x
  2. Step 2: Convert to fraction form
    8,880.72/12,241.71 = 6,639.18/x
  3. Step 3: Cross multiply
    8,880.72x = 12,241.71 × 6,639.18
  4. Step 4: Simplify right side
    8,880.72x = 81,274,916.20
  5. Step 5: Solve for x
    x = 81,274,916.20/8,880.72
  6. Step 6: Final answer
    x = 9,151.84

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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.