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Finding the Fourth Proportional to 6,888.90, 9,506.58 and 3,904.68

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Solution

The fourth proportional to 6,888.90, 9,506.58 and 3,904.68 is: 5,388.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,888.90 : 9,506.58 = 3,904.68 : x
  2. Step 2: Convert to fraction form
    6,888.90/9,506.58 = 3,904.68/x
  3. Step 3: Cross multiply
    6,888.90x = 9,506.58 × 3,904.68
  4. Step 4: Simplify right side
    6,888.90x = 37,120,152.79
  5. Step 5: Solve for x
    x = 37,120,152.79/6,888.90
  6. Step 6: Final answer
    x = 5,388.40

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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.