Home / 5,157.72-7,118.52-2,920.23

Finding the Fourth Proportional to 5,157.72, 7,118.52 and 2,920.23

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Solution

The fourth proportional to 5,157.72, 7,118.52 and 2,920.23 is: 4,030.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.72 : 7,118.52 = 2,920.23 : x
  2. Step 2: Convert to fraction form
    5,157.72/7,118.52 = 2,920.23/x
  3. Step 3: Cross multiply
    5,157.72x = 7,118.52 × 2,920.23
  4. Step 4: Simplify right side
    5,157.72x = 20,787,715.66
  5. Step 5: Solve for x
    x = 20,787,715.66/5,157.72
  6. Step 6: Final answer
    x = 4,030.41

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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.