Home / 9,021.90-12,450.12-4,988.72

Finding the Fourth Proportional to 9,021.90, 12,450.12 and 4,988.72

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Solution

The fourth proportional to 9,021.90, 12,450.12 and 4,988.72 is: 6,884.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,021.90 : 12,450.12 = 4,988.72 : x
  2. Step 2: Convert to fraction form
    9,021.90/12,450.12 = 4,988.72/x
  3. Step 3: Cross multiply
    9,021.90x = 12,450.12 × 4,988.72
  4. Step 4: Simplify right side
    9,021.90x = 62,110,162.65
  5. Step 5: Solve for x
    x = 62,110,162.65/9,021.90
  6. Step 6: Final answer
    x = 6,884.38

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Half scale
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Double scale
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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.