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Finding the Fourth Proportional to 7,281.88, 10,077.86 and 7,107.19

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Solution

The fourth proportional to 7,281.88, 10,077.86 and 7,107.19 is: 9,836.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281.88 : 10,077.86 = 7,107.19 : x
  2. Step 2: Convert to fraction form
    7,281.88/10,077.86 = 7,107.19/x
  3. Step 3: Cross multiply
    7,281.88x = 10,077.86 × 7,107.19
  4. Step 4: Simplify right side
    7,281.88x = 71,625,258.39
  5. Step 5: Solve for x
    x = 71,625,258.39/7,281.88
  6. Step 6: Final answer
    x = 9,836.10

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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.