Home / 2,898.95-4,000.29-1,640.12

Finding the Fourth Proportional to 2,898.95, 4,000.29 and 1,640.12

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Solution

The fourth proportional to 2,898.95, 4,000.29 and 1,640.12 is: 2,263.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.95 : 4,000.29 = 1,640.12 : x
  2. Step 2: Convert to fraction form
    2,898.95/4,000.29 = 1,640.12/x
  3. Step 3: Cross multiply
    2,898.95x = 4,000.29 × 1,640.12
  4. Step 4: Simplify right side
    2,898.95x = 6,560,965.64
  5. Step 5: Solve for x
    x = 6,560,965.64/2,898.95
  6. Step 6: Final answer
    x = 2,263.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.