Home / 2,930.78-4,390.28-1,368.63

Finding the Fourth Proportional to 2,930.78, 4,390.28 and 1,368.63

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Solution

The fourth proportional to 2,930.78, 4,390.28 and 1,368.63 is: 2,050.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.78 : 4,390.28 = 1,368.63 : x
  2. Step 2: Convert to fraction form
    2,930.78/4,390.28 = 1,368.63/x
  3. Step 3: Cross multiply
    2,930.78x = 4,390.28 × 1,368.63
  4. Step 4: Simplify right side
    2,930.78x = 6,008,650.74
  5. Step 5: Solve for x
    x = 6,008,650.74/2,930.78
  6. Step 6: Final answer
    x = 2,050.19

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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.