Home / 7,351.21-10,144.47-4,207.20

Finding the Fourth Proportional to 7,351.21, 10,144.47 and 4,207.20

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Solution

The fourth proportional to 7,351.21, 10,144.47 and 4,207.20 is: 5,805.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,351.21 : 10,144.47 = 4,207.20 : x
  2. Step 2: Convert to fraction form
    7,351.21/10,144.47 = 4,207.20/x
  3. Step 3: Cross multiply
    7,351.21x = 10,144.47 × 4,207.20
  4. Step 4: Simplify right side
    7,351.21x = 42,679,814.18
  5. Step 5: Solve for x
    x = 42,679,814.18/7,351.21
  6. Step 6: Final answer
    x = 5,805.82

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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.