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Finding the Fourth Proportional to 6,637.60, 9,957.60 and 3,342.40

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Solution

The fourth proportional to 6,637.60, 9,957.60 and 3,342.40 is: 5,014.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,637.60 : 9,957.60 = 3,342.40 : x
  2. Step 2: Convert to fraction form
    6,637.60/9,957.60 = 3,342.40/x
  3. Step 3: Cross multiply
    6,637.60x = 9,957.60 × 3,342.40
  4. Step 4: Simplify right side
    6,637.60x = 33,282,282.24
  5. Step 5: Solve for x
    x = 33,282,282.24/6,637.60
  6. Step 6: Final answer
    x = 5,014.20

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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.