Home / 9,116.20-12,580.42-5,137.16

Finding the Fourth Proportional to 9,116.20, 12,580.42 and 5,137.16

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Solution

The fourth proportional to 9,116.20, 12,580.42 and 5,137.16 is: 7,089.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,116.20 : 12,580.42 = 5,137.16 : x
  2. Step 2: Convert to fraction form
    9,116.20/12,580.42 = 5,137.16/x
  3. Step 3: Cross multiply
    9,116.20x = 12,580.42 × 5,137.16
  4. Step 4: Simplify right side
    9,116.20x = 64,627,630.41
  5. Step 5: Solve for x
    x = 64,627,630.41/9,116.20
  6. Step 6: Final answer
    x = 7,089.32

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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.