Home / 2,830.87-4,248.89-1,445.20

Finding the Fourth Proportional to 2,830.87, 4,248.89 and 1,445.20

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Solution

The fourth proportional to 2,830.87, 4,248.89 and 1,445.20 is: 2,169.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.87 : 4,248.89 = 1,445.20 : x
  2. Step 2: Convert to fraction form
    2,830.87/4,248.89 = 1,445.20/x
  3. Step 3: Cross multiply
    2,830.87x = 4,248.89 × 1,445.20
  4. Step 4: Simplify right side
    2,830.87x = 6,140,495.83
  5. Step 5: Solve for x
    x = 6,140,495.83/2,830.87
  6. Step 6: Final answer
    x = 2,169.12

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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.