Home / 5,137.60-7,710.76-2,019.78

Finding the Fourth Proportional to 5,137.60, 7,710.76 and 2,019.78

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Solution

The fourth proportional to 5,137.60, 7,710.76 and 2,019.78 is: 3,031.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.60 : 7,710.76 = 2,019.78 : x
  2. Step 2: Convert to fraction form
    5,137.60/7,710.76 = 2,019.78/x
  3. Step 3: Cross multiply
    5,137.60x = 7,710.76 × 2,019.78
  4. Step 4: Simplify right side
    5,137.60x = 15,574,038.83
  5. Step 5: Solve for x
    x = 15,574,038.83/5,137.60
  6. Step 6: Final answer
    x = 3,031.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.