Home / 5,015.59-6,921.36-2,891.13

Finding the Fourth Proportional to 5,015.59, 6,921.36 and 2,891.13

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Solution

The fourth proportional to 5,015.59, 6,921.36 and 2,891.13 is: 3,989.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.59 : 6,921.36 = 2,891.13 : x
  2. Step 2: Convert to fraction form
    5,015.59/6,921.36 = 2,891.13/x
  3. Step 3: Cross multiply
    5,015.59x = 6,921.36 × 2,891.13
  4. Step 4: Simplify right side
    5,015.59x = 20,010,564.51
  5. Step 5: Solve for x
    x = 20,010,564.51/5,015.59
  6. Step 6: Final answer
    x = 3,989.67

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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.