Home / 6,320.13-8,721.64-3,487.40

Finding the Fourth Proportional to 6,320.13, 8,721.64 and 3,487.40

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Solution

The fourth proportional to 6,320.13, 8,721.64 and 3,487.40 is: 4,812.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,320.13 : 8,721.64 = 3,487.40 : x
  2. Step 2: Convert to fraction form
    6,320.13/8,721.64 = 3,487.40/x
  3. Step 3: Cross multiply
    6,320.13x = 8,721.64 × 3,487.40
  4. Step 4: Simplify right side
    6,320.13x = 30,415,803.73
  5. Step 5: Solve for x
    x = 30,415,803.73/6,320.13
  6. Step 6: Final answer
    x = 4,812.53

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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.