Home / 8,815.40-12,162.66-5,460.68

Finding the Fourth Proportional to 8,815.40, 12,162.66 and 5,460.68

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Solution

The fourth proportional to 8,815.40, 12,162.66 and 5,460.68 is: 7,534.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.40 : 12,162.66 = 5,460.68 : x
  2. Step 2: Convert to fraction form
    8,815.40/12,162.66 = 5,460.68/x
  3. Step 3: Cross multiply
    8,815.40x = 12,162.66 × 5,460.68
  4. Step 4: Simplify right side
    8,815.40x = 66,416,394.21
  5. Step 5: Solve for x
    x = 66,416,394.21/8,815.40
  6. Step 6: Final answer
    x = 7,534.13

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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.