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Finding the Fourth Proportional to 6,862.40, 10,293.60 and 3,406.40

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Solution

The fourth proportional to 6,862.40, 10,293.60 and 3,406.40 is: 5,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,862.40 : 10,293.60 = 3,406.40 : x
  2. Step 2: Convert to fraction form
    6,862.40/10,293.60 = 3,406.40/x
  3. Step 3: Cross multiply
    6,862.40x = 10,293.60 × 3,406.40
  4. Step 4: Simplify right side
    6,862.40x = 35,064,119.04
  5. Step 5: Solve for x
    x = 35,064,119.04/6,862.40
  6. Step 6: Final answer
    x = 5,109.60

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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.