Home / 7,047.20-9,725.10-3,903.38

Finding the Fourth Proportional to 7,047.20, 9,725.10 and 3,903.38

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Solution

The fourth proportional to 7,047.20, 9,725.10 and 3,903.38 is: 5,386.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,047.20 : 9,725.10 = 3,903.38 : x
  2. Step 2: Convert to fraction form
    7,047.20/9,725.10 = 3,903.38/x
  3. Step 3: Cross multiply
    7,047.20x = 9,725.10 × 3,903.38
  4. Step 4: Simplify right side
    7,047.20x = 37,960,760.84
  5. Step 5: Solve for x
    x = 37,960,760.84/7,047.20
  6. Step 6: Final answer
    x = 5,386.64

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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.