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Finding the Fourth Proportional to 6,315.30, 8,719.20 and 4,325.10

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Solution

The fourth proportional to 6,315.30, 8,719.20 and 4,325.10 is: 5,971.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,315.30 : 8,719.20 = 4,325.10 : x
  2. Step 2: Convert to fraction form
    6,315.30/8,719.20 = 4,325.10/x
  3. Step 3: Cross multiply
    6,315.30x = 8,719.20 × 4,325.10
  4. Step 4: Simplify right side
    6,315.30x = 37,711,411.92
  5. Step 5: Solve for x
    x = 37,711,411.92/6,315.30
  6. Step 6: Final answer
    x = 5,971.44

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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.