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Finding the Fourth Proportional to 6,139.60, 9,210.60 and 2,441.20

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Solution

The fourth proportional to 6,139.60, 9,210.60 and 2,441.20 is: 3,662.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139.60 : 9,210.60 = 2,441.20 : x
  2. Step 2: Convert to fraction form
    6,139.60/9,210.60 = 2,441.20/x
  3. Step 3: Cross multiply
    6,139.60x = 9,210.60 × 2,441.20
  4. Step 4: Simplify right side
    6,139.60x = 22,484,916.72
  5. Step 5: Solve for x
    x = 22,484,916.72/6,139.60
  6. Step 6: Final answer
    x = 3,662.28

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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.