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Finding the Fourth Proportional to 6,561.76, 9,840.24 and 2,400.40

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Solution

The fourth proportional to 6,561.76, 9,840.24 and 2,400.40 is: 3,599.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,561.76 : 9,840.24 = 2,400.40 : x
  2. Step 2: Convert to fraction form
    6,561.76/9,840.24 = 2,400.40/x
  3. Step 3: Cross multiply
    6,561.76x = 9,840.24 × 2,400.40
  4. Step 4: Simplify right side
    6,561.76x = 23,620,512.10
  5. Step 5: Solve for x
    x = 23,620,512.10/6,561.76
  6. Step 6: Final answer
    x = 3,599.72

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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.