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Finding the Fourth Proportional to 6,491.07, 8,955.54 and 4,255.92

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Solution

The fourth proportional to 6,491.07, 8,955.54 and 4,255.92 is: 5,871.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,491.07 : 8,955.54 = 4,255.92 : x
  2. Step 2: Convert to fraction form
    6,491.07/8,955.54 = 4,255.92/x
  3. Step 3: Cross multiply
    6,491.07x = 8,955.54 × 4,255.92
  4. Step 4: Simplify right side
    6,491.07x = 38,114,061.80
  5. Step 5: Solve for x
    x = 38,114,061.80/6,491.07
  6. Step 6: Final answer
    x = 5,871.77

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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.