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Finding the Fourth Proportional to 9,864.71, 13,615.07 and 5,831.38

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Solution

The fourth proportional to 9,864.71, 13,615.07 and 5,831.38 is: 8,048.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,864.71 : 13,615.07 = 5,831.38 : x
  2. Step 2: Convert to fraction form
    9,864.71/13,615.07 = 5,831.38/x
  3. Step 3: Cross multiply
    9,864.71x = 13,615.07 × 5,831.38
  4. Step 4: Simplify right side
    9,864.71x = 79,394,646.90
  5. Step 5: Solve for x
    x = 79,394,646.90/9,864.71
  6. Step 6: Final answer
    x = 8,048.35

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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.