Home / 9,618.16-13,273.44-5,638.72

Finding the Fourth Proportional to 9,618.16, 13,273.44 and 5,638.72

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Solution

The fourth proportional to 9,618.16, 13,273.44 and 5,638.72 is: 7,781.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,618.16 : 13,273.44 = 5,638.72 : x
  2. Step 2: Convert to fraction form
    9,618.16/13,273.44 = 5,638.72/x
  3. Step 3: Cross multiply
    9,618.16x = 13,273.44 × 5,638.72
  4. Step 4: Simplify right side
    9,618.16x = 74,845,211.60
  5. Step 5: Solve for x
    x = 74,845,211.60/9,618.16
  6. Step 6: Final answer
    x = 7,781.66

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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.