Home / 7,121.47-10,670.48-2,438.89

Finding the Fourth Proportional to 7,121.47, 10,670.48 and 2,438.89

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Solution

The fourth proportional to 7,121.47, 10,670.48 and 2,438.89 is: 3,654.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.47 : 10,670.48 = 2,438.89 : x
  2. Step 2: Convert to fraction form
    7,121.47/10,670.48 = 2,438.89/x
  3. Step 3: Cross multiply
    7,121.47x = 10,670.48 × 2,438.89
  4. Step 4: Simplify right side
    7,121.47x = 26,024,126.97
  5. Step 5: Solve for x
    x = 26,024,126.97/7,121.47
  6. Step 6: Final answer
    x = 3,654.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.