Home / 8,815.20-12,166.23-5,459.10

Finding the Fourth Proportional to 8,815.20, 12,166.23 and 5,459.10

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Solution

The fourth proportional to 8,815.20, 12,166.23 and 5,459.10 is: 7,534.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.20 : 12,166.23 = 5,459.10 : x
  2. Step 2: Convert to fraction form
    8,815.20/12,166.23 = 5,459.10/x
  3. Step 3: Cross multiply
    8,815.20x = 12,166.23 × 5,459.10
  4. Step 4: Simplify right side
    8,815.20x = 66,416,666.19
  5. Step 5: Solve for x
    x = 66,416,666.19/8,815.20
  6. Step 6: Final answer
    x = 7,534.33

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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.