Home / 5,158.27-7,118.04-2,920.40

Finding the Fourth Proportional to 5,158.27, 7,118.04 and 2,920.40

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Solution

The fourth proportional to 5,158.27, 7,118.04 and 2,920.40 is: 4,029.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.27 : 7,118.04 = 2,920.40 : x
  2. Step 2: Convert to fraction form
    5,158.27/7,118.04 = 2,920.40/x
  3. Step 3: Cross multiply
    5,158.27x = 7,118.04 × 2,920.40
  4. Step 4: Simplify right side
    5,158.27x = 20,787,526.07
  5. Step 5: Solve for x
    x = 20,787,526.07/5,158.27
  6. Step 6: Final answer
    x = 4,029.94

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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.