Home / 7,065.24-9,750.80-3,921.72

Finding the Fourth Proportional to 7,065.24, 9,750.80 and 3,921.72

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Solution

The fourth proportional to 7,065.24, 9,750.80 and 3,921.72 is: 5,412.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.24 : 9,750.80 = 3,921.72 : x
  2. Step 2: Convert to fraction form
    7,065.24/9,750.80 = 3,921.72/x
  3. Step 3: Cross multiply
    7,065.24x = 9,750.80 × 3,921.72
  4. Step 4: Simplify right side
    7,065.24x = 38,239,907.38
  5. Step 5: Solve for x
    x = 38,239,907.38/7,065.24
  6. Step 6: Final answer
    x = 5,412.40

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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.