Home / 4,329.78-6,490-1,865.76

Finding the Fourth Proportional to 4,329.78, 6,490 and 1,865.76

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Solution

The fourth proportional to 4,329.78, 6,490 and 1,865.76 is: 2,796.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,329.78 : 6,490 = 1,865.76 : x
  2. Step 2: Convert to fraction form
    4,329.78/6,490 = 1,865.76/x
  3. Step 3: Cross multiply
    4,329.78x = 6,490 × 1,865.76
  4. Step 4: Simplify right side
    4,329.78x = 12,108,782.40
  5. Step 5: Solve for x
    x = 12,108,782.40/4,329.78
  6. Step 6: Final answer
    x = 2,796.63

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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.