Home / 5,151.36-7,108.57-2,913.71

Finding the Fourth Proportional to 5,151.36, 7,108.57 and 2,913.71

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Solution

The fourth proportional to 5,151.36, 7,108.57 and 2,913.71 is: 4,020.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.36 : 7,108.57 = 2,913.71 : x
  2. Step 2: Convert to fraction form
    5,151.36/7,108.57 = 2,913.71/x
  3. Step 3: Cross multiply
    5,151.36x = 7,108.57 × 2,913.71
  4. Step 4: Simplify right side
    5,151.36x = 20,712,311.49
  5. Step 5: Solve for x
    x = 20,712,311.49/5,151.36
  6. Step 6: Final answer
    x = 4,020.75

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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.