Home / 6,386.13-8,812.81-3,515.02

Finding the Fourth Proportional to 6,386.13, 8,812.81 and 3,515.02

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Solution

The fourth proportional to 6,386.13, 8,812.81 and 3,515.02 is: 4,850.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.13 : 8,812.81 = 3,515.02 : x
  2. Step 2: Convert to fraction form
    6,386.13/8,812.81 = 3,515.02/x
  3. Step 3: Cross multiply
    6,386.13x = 8,812.81 × 3,515.02
  4. Step 4: Simplify right side
    6,386.13x = 30,977,203.41
  5. Step 5: Solve for x
    x = 30,977,203.41/6,386.13
  6. Step 6: Final answer
    x = 4,850.70

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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.