Home / 5,227.79-7,214.36-2,990.10

Finding the Fourth Proportional to 5,227.79, 7,214.36 and 2,990.10

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Solution

The fourth proportional to 5,227.79, 7,214.36 and 2,990.10 is: 4,126.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,227.79 : 7,214.36 = 2,990.10 : x
  2. Step 2: Convert to fraction form
    5,227.79/7,214.36 = 2,990.10/x
  3. Step 3: Cross multiply
    5,227.79x = 7,214.36 × 2,990.10
  4. Step 4: Simplify right side
    5,227.79x = 21,571,642.89
  5. Step 5: Solve for x
    x = 21,571,642.89/5,227.79
  6. Step 6: Final answer
    x = 4,126.34

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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.