Home / 9,787.56-13,506.60-5,311.12

Finding the Fourth Proportional to 9,787.56, 13,506.60 and 5,311.12

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Solution

The fourth proportional to 9,787.56, 13,506.60 and 5,311.12 is: 7,329.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,787.56 : 13,506.60 = 5,311.12 : x
  2. Step 2: Convert to fraction form
    9,787.56/13,506.60 = 5,311.12/x
  3. Step 3: Cross multiply
    9,787.56x = 13,506.60 × 5,311.12
  4. Step 4: Simplify right side
    9,787.56x = 71,735,173.39
  5. Step 5: Solve for x
    x = 71,735,173.39/9,787.56
  6. Step 6: Final answer
    x = 7,329.22

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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.