Home / 2,985.76-4,478.28-1,037.80

Finding the Fourth Proportional to 2,985.76, 4,478.28 and 1,037.80

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Solution

The fourth proportional to 2,985.76, 4,478.28 and 1,037.80 is: 1,556.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.76 : 4,478.28 = 1,037.80 : x
  2. Step 2: Convert to fraction form
    2,985.76/4,478.28 = 1,037.80/x
  3. Step 3: Cross multiply
    2,985.76x = 4,478.28 × 1,037.80
  4. Step 4: Simplify right side
    2,985.76x = 4,647,558.98
  5. Step 5: Solve for x
    x = 4,647,558.98/2,985.76
  6. Step 6: Final answer
    x = 1,556.57

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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.