Home / 9,787.39-13,506.53-5,311.03

Finding the Fourth Proportional to 9,787.39, 13,506.53 and 5,311.03

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Solution

The fourth proportional to 9,787.39, 13,506.53 and 5,311.03 is: 7,329.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,787.39 : 13,506.53 = 5,311.03 : x
  2. Step 2: Convert to fraction form
    9,787.39/13,506.53 = 5,311.03/x
  3. Step 3: Cross multiply
    9,787.39x = 13,506.53 × 5,311.03
  4. Step 4: Simplify right side
    9,787.39x = 71,733,491.94
  5. Step 5: Solve for x
    x = 71,733,491.94/9,787.39
  6. Step 6: Final answer
    x = 7,329.18

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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.