Home / 9,218.67-12,721.35-5,239.72

Finding the Fourth Proportional to 9,218.67, 12,721.35 and 5,239.72

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Solution

The fourth proportional to 9,218.67, 12,721.35 and 5,239.72 is: 7,230.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,218.67 : 12,721.35 = 5,239.72 : x
  2. Step 2: Convert to fraction form
    9,218.67/12,721.35 = 5,239.72/x
  3. Step 3: Cross multiply
    9,218.67x = 12,721.35 × 5,239.72
  4. Step 4: Simplify right side
    9,218.67x = 66,656,312.02
  5. Step 5: Solve for x
    x = 66,656,312.02/9,218.67
  6. Step 6: Final answer
    x = 7,230.58

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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.