Home / 5,087.13-7,019.89-2,818.45

Finding the Fourth Proportional to 5,087.13, 7,019.89 and 2,818.45

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Solution

The fourth proportional to 5,087.13, 7,019.89 and 2,818.45 is: 3,889.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,087.13 : 7,019.89 = 2,818.45 : x
  2. Step 2: Convert to fraction form
    5,087.13/7,019.89 = 2,818.45/x
  3. Step 3: Cross multiply
    5,087.13x = 7,019.89 × 2,818.45
  4. Step 4: Simplify right side
    5,087.13x = 19,785,208.97
  5. Step 5: Solve for x
    x = 19,785,208.97/5,087.13
  6. Step 6: Final answer
    x = 3,889.27

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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.