Home / 9,621.18-13,275.09-5,640.84

Finding the Fourth Proportional to 9,621.18, 13,275.09 and 5,640.84

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Solution

The fourth proportional to 9,621.18, 13,275.09 and 5,640.84 is: 7,783.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.18 : 13,275.09 = 5,640.84 : x
  2. Step 2: Convert to fraction form
    9,621.18/13,275.09 = 5,640.84/x
  3. Step 3: Cross multiply
    9,621.18x = 13,275.09 × 5,640.84
  4. Step 4: Simplify right side
    9,621.18x = 74,882,658.68
  5. Step 5: Solve for x
    x = 74,882,658.68/9,621.18
  6. Step 6: Final answer
    x = 7,783.11

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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.