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Finding the Fourth Proportional to 5,810.48, 8,718.20 and 3,213.20

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Solution

The fourth proportional to 5,810.48, 8,718.20 and 3,213.20 is: 4,821.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,810.48 : 8,718.20 = 3,213.20 : x
  2. Step 2: Convert to fraction form
    5,810.48/8,718.20 = 3,213.20/x
  3. Step 3: Cross multiply
    5,810.48x = 8,718.20 × 3,213.20
  4. Step 4: Simplify right side
    5,810.48x = 28,013,320.24
  5. Step 5: Solve for x
    x = 28,013,320.24/5,810.48
  6. Step 6: Final answer
    x = 4,821.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.