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Finding the Fourth Proportional to 2,798.38, 3,861.07 and 1,802.46

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Solution

The fourth proportional to 2,798.38, 3,861.07 and 1,802.46 is: 2,486.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.38 : 3,861.07 = 1,802.46 : x
  2. Step 2: Convert to fraction form
    2,798.38/3,861.07 = 1,802.46/x
  3. Step 3: Cross multiply
    2,798.38x = 3,861.07 × 1,802.46
  4. Step 4: Simplify right side
    2,798.38x = 6,959,423.35
  5. Step 5: Solve for x
    x = 6,959,423.35/2,798.38
  6. Step 6: Final answer
    x = 2,486.95

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1.5x scale

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.