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Finding the Fourth Proportional to 6,479.40, 8,955.38 and 5,711.52

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Solution

The fourth proportional to 6,479.40, 8,955.38 and 5,711.52 is: 7,894.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.40 : 8,955.38 = 5,711.52 : x
  2. Step 2: Convert to fraction form
    6,479.40/8,955.38 = 5,711.52/x
  3. Step 3: Cross multiply
    6,479.40x = 8,955.38 × 5,711.52
  4. Step 4: Simplify right side
    6,479.40x = 51,148,831.98
  5. Step 5: Solve for x
    x = 51,148,831.98/6,479.40
  6. Step 6: Final answer
    x = 7,894.07

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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.