Home / 9,291.72-12,820.08-5,511.74

Finding the Fourth Proportional to 9,291.72, 12,820.08 and 5,511.74

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Solution

The fourth proportional to 9,291.72, 12,820.08 and 5,511.74 is: 7,604.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291.72 : 12,820.08 = 5,511.74 : x
  2. Step 2: Convert to fraction form
    9,291.72/12,820.08 = 5,511.74/x
  3. Step 3: Cross multiply
    9,291.72x = 12,820.08 × 5,511.74
  4. Step 4: Simplify right side
    9,291.72x = 70,660,883.64
  5. Step 5: Solve for x
    x = 70,660,883.64/9,291.72
  6. Step 6: Final answer
    x = 7,604.72

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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.