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Finding the Fourth Proportional to 9,615.40, 13,263.78 and 6,080.20

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Solution

The fourth proportional to 9,615.40, 13,263.78 and 6,080.20 is: 8,387.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,615.40 : 13,263.78 = 6,080.20 : x
  2. Step 2: Convert to fraction form
    9,615.40/13,263.78 = 6,080.20/x
  3. Step 3: Cross multiply
    9,615.40x = 13,263.78 × 6,080.20
  4. Step 4: Simplify right side
    9,615.40x = 80,646,435.16
  5. Step 5: Solve for x
    x = 80,646,435.16/9,615.40
  6. Step 6: Final answer
    x = 8,387.22

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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.