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Finding the Fourth Proportional to 7,219.46, 9,957.93 and 6,480.74

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Solution

The fourth proportional to 7,219.46, 9,957.93 and 6,480.74 is: 8,939.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.46 : 9,957.93 = 6,480.74 : x
  2. Step 2: Convert to fraction form
    7,219.46/9,957.93 = 6,480.74/x
  3. Step 3: Cross multiply
    7,219.46x = 9,957.93 × 6,480.74
  4. Step 4: Simplify right side
    7,219.46x = 64,534,755.27
  5. Step 5: Solve for x
    x = 64,534,755.27/7,219.46
  6. Step 6: Final answer
    x = 8,939.00

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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.