Home / 7,146.30-10,719-2,215.56

Finding the Fourth Proportional to 7,146.30, 10,719 and 2,215.56

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Solution

The fourth proportional to 7,146.30, 10,719 and 2,215.56 is: 3,323.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.30 : 10,719 = 2,215.56 : x
  2. Step 2: Convert to fraction form
    7,146.30/10,719 = 2,215.56/x
  3. Step 3: Cross multiply
    7,146.30x = 10,719 × 2,215.56
  4. Step 4: Simplify right side
    7,146.30x = 23,748,587.64
  5. Step 5: Solve for x
    x = 23,748,587.64/7,146.30
  6. Step 6: Final answer
    x = 3,323.20

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1.5x scale

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.