Home / 8,987.09-12,401.91-5,210.33

Finding the Fourth Proportional to 8,987.09, 12,401.91 and 5,210.33

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Solution

The fourth proportional to 8,987.09, 12,401.91 and 5,210.33 is: 7,190.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.09 : 12,401.91 = 5,210.33 : x
  2. Step 2: Convert to fraction form
    8,987.09/12,401.91 = 5,210.33/x
  3. Step 3: Cross multiply
    8,987.09x = 12,401.91 × 5,210.33
  4. Step 4: Simplify right side
    8,987.09x = 64,618,043.73
  5. Step 5: Solve for x
    x = 64,618,043.73/8,987.09
  6. Step 6: Final answer
    x = 7,190.10

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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.