Home / 5,158.74-7,119.07-2,800.88

Finding the Fourth Proportional to 5,158.74, 7,119.07 and 2,800.88

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Solution

The fourth proportional to 5,158.74, 7,119.07 and 2,800.88 is: 3,865.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.74 : 7,119.07 = 2,800.88 : x
  2. Step 2: Convert to fraction form
    5,158.74/7,119.07 = 2,800.88/x
  3. Step 3: Cross multiply
    5,158.74x = 7,119.07 × 2,800.88
  4. Step 4: Simplify right side
    5,158.74x = 19,939,625.19
  5. Step 5: Solve for x
    x = 19,939,625.19/5,158.74
  6. Step 6: Final answer
    x = 3,865.22

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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.