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Finding the Fourth Proportional to 1,604.95, 2,214.80 and 896.81

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Solution

The fourth proportional to 1,604.95, 2,214.80 and 896.81 is: 1,237.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,604.95 : 2,214.80 = 896.81 : x
  2. Step 2: Convert to fraction form
    1,604.95/2,214.80 = 896.81/x
  3. Step 3: Cross multiply
    1,604.95x = 2,214.80 × 896.81
  4. Step 4: Simplify right side
    1,604.95x = 1,986,243.71
  5. Step 5: Solve for x
    x = 1,986,243.71/1,604.95
  6. Step 6: Final answer
    x = 1,237.58

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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.