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Finding the Fourth Proportional to 5,615.04, 7,750.62 and 3,851.76

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Solution

The fourth proportional to 5,615.04, 7,750.62 and 3,851.76 is: 5,316.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.04 : 7,750.62 = 3,851.76 : x
  2. Step 2: Convert to fraction form
    5,615.04/7,750.62 = 3,851.76/x
  3. Step 3: Cross multiply
    5,615.04x = 7,750.62 × 3,851.76
  4. Step 4: Simplify right side
    5,615.04x = 29,853,528.09
  5. Step 5: Solve for x
    x = 29,853,528.09/5,615.04
  6. Step 6: Final answer
    x = 5,316.71

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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.