Home / 9,981.92-13,770.60-5,787.74

Finding the Fourth Proportional to 9,981.92, 13,770.60 and 5,787.74

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Solution

The fourth proportional to 9,981.92, 13,770.60 and 5,787.74 is: 7,984.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,981.92 : 13,770.60 = 5,787.74 : x
  2. Step 2: Convert to fraction form
    9,981.92/13,770.60 = 5,787.74/x
  3. Step 3: Cross multiply
    9,981.92x = 13,770.60 × 5,787.74
  4. Step 4: Simplify right side
    9,981.92x = 79,700,652.44
  5. Step 5: Solve for x
    x = 79,700,652.44/9,981.92
  6. Step 6: Final answer
    x = 7,984.50

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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.