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Finding the Fourth Proportional to 6,398.78, 9,598.08 and 3,900.71

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Solution

The fourth proportional to 6,398.78, 9,598.08 and 3,900.71 is: 5,851.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,398.78 : 9,598.08 = 3,900.71 : x
  2. Step 2: Convert to fraction form
    6,398.78/9,598.08 = 3,900.71/x
  3. Step 3: Cross multiply
    6,398.78x = 9,598.08 × 3,900.71
  4. Step 4: Simplify right side
    6,398.78x = 37,439,305.79
  5. Step 5: Solve for x
    x = 37,439,305.79/6,398.78
  6. Step 6: Final answer
    x = 5,851.00

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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.