Home / 9,211.10-13,821.15-4,278.20

Finding the Fourth Proportional to 9,211.10, 13,821.15 and 4,278.20

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Solution

The fourth proportional to 9,211.10, 13,821.15 and 4,278.20 is: 6,419.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,211.10 : 13,821.15 = 4,278.20 : x
  2. Step 2: Convert to fraction form
    9,211.10/13,821.15 = 4,278.20/x
  3. Step 3: Cross multiply
    9,211.10x = 13,821.15 × 4,278.20
  4. Step 4: Simplify right side
    9,211.10x = 59,129,643.93
  5. Step 5: Solve for x
    x = 59,129,643.93/9,211.10
  6. Step 6: Final answer
    x = 6,419.39

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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.