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Finding the Fourth Proportional to 6,389.66, 9,585.39 and 2,007.47

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Solution

The fourth proportional to 6,389.66, 9,585.39 and 2,007.47 is: 3,011.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.66 : 9,585.39 = 2,007.47 : x
  2. Step 2: Convert to fraction form
    6,389.66/9,585.39 = 2,007.47/x
  3. Step 3: Cross multiply
    6,389.66x = 9,585.39 × 2,007.47
  4. Step 4: Simplify right side
    6,389.66x = 19,242,382.86
  5. Step 5: Solve for x
    x = 19,242,382.86/6,389.66
  6. Step 6: Final answer
    x = 3,011.49

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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.