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Finding the Fourth Proportional to 6,638.51, 9,957.90 and 1,708.18

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Solution

The fourth proportional to 6,638.51, 9,957.90 and 1,708.18 is: 2,562.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.51 : 9,957.90 = 1,708.18 : x
  2. Step 2: Convert to fraction form
    6,638.51/9,957.90 = 1,708.18/x
  3. Step 3: Cross multiply
    6,638.51x = 9,957.90 × 1,708.18
  4. Step 4: Simplify right side
    6,638.51x = 17,009,885.62
  5. Step 5: Solve for x
    x = 17,009,885.62/6,638.51
  6. Step 6: Final answer
    x = 2,562.30

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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.