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Finding the Fourth Proportional to 6,312.92, 8,712.22 and 3,480.28

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Solution

The fourth proportional to 6,312.92, 8,712.22 and 3,480.28 is: 4,803.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,312.92 : 8,712.22 = 3,480.28 : x
  2. Step 2: Convert to fraction form
    6,312.92/8,712.22 = 3,480.28/x
  3. Step 3: Cross multiply
    6,312.92x = 8,712.22 × 3,480.28
  4. Step 4: Simplify right side
    6,312.92x = 30,320,965.02
  5. Step 5: Solve for x
    x = 30,320,965.02/6,312.92
  6. Step 6: Final answer
    x = 4,803.00

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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.