Home / 5,137.52-7,089.59-3,151.40

Finding the Fourth Proportional to 5,137.52, 7,089.59 and 3,151.40

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Solution

The fourth proportional to 5,137.52, 7,089.59 and 3,151.40 is: 4,348.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.52 : 7,089.59 = 3,151.40 : x
  2. Step 2: Convert to fraction form
    5,137.52/7,089.59 = 3,151.40/x
  3. Step 3: Cross multiply
    5,137.52x = 7,089.59 × 3,151.40
  4. Step 4: Simplify right side
    5,137.52x = 22,342,106.36
  5. Step 5: Solve for x
    x = 22,342,106.36/5,137.52
  6. Step 6: Final answer
    x = 4,348.82

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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.