Home / 9,787.36-13,506.45-5,311.21

Finding the Fourth Proportional to 9,787.36, 13,506.45 and 5,311.21

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Solution

The fourth proportional to 9,787.36, 13,506.45 and 5,311.21 is: 7,329.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,787.36 : 13,506.45 = 5,311.21 : x
  2. Step 2: Convert to fraction form
    9,787.36/13,506.45 = 5,311.21/x
  3. Step 3: Cross multiply
    9,787.36x = 13,506.45 × 5,311.21
  4. Step 4: Simplify right side
    9,787.36x = 71,735,592.30
  5. Step 5: Solve for x
    x = 71,735,592.30/9,787.36
  6. Step 6: Final answer
    x = 7,329.41

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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.