Home / 7,518.16-11,276.12-1,971.60

Finding the Fourth Proportional to 7,518.16, 11,276.12 and 1,971.60

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Solution

The fourth proportional to 7,518.16, 11,276.12 and 1,971.60 is: 2,957.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,518.16 : 11,276.12 = 1,971.60 : x
  2. Step 2: Convert to fraction form
    7,518.16/11,276.12 = 1,971.60/x
  3. Step 3: Cross multiply
    7,518.16x = 11,276.12 × 1,971.60
  4. Step 4: Simplify right side
    7,518.16x = 22,231,998.19
  5. Step 5: Solve for x
    x = 22,231,998.19/7,518.16
  6. Step 6: Final answer
    x = 2,957.11

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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.