Home / 3,615.02-4,991.13-2,220.18

Finding the Fourth Proportional to 3,615.02, 4,991.13 and 2,220.18

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Solution

The fourth proportional to 3,615.02, 4,991.13 and 2,220.18 is: 3,065.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.02 : 4,991.13 = 2,220.18 : x
  2. Step 2: Convert to fraction form
    3,615.02/4,991.13 = 2,220.18/x
  3. Step 3: Cross multiply
    3,615.02x = 4,991.13 × 2,220.18
  4. Step 4: Simplify right side
    3,615.02x = 11,081,207.00
  5. Step 5: Solve for x
    x = 11,081,207.00/3,615.02
  6. Step 6: Final answer
    x = 3,065.32

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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.