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Finding the Fourth Proportional to 1,604.70, 2,214.78 and 1,038.23

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Solution

The fourth proportional to 1,604.70, 2,214.78 and 1,038.23 is: 1,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,604.70 : 2,214.78 = 1,038.23 : x
  2. Step 2: Convert to fraction form
    1,604.70/2,214.78 = 1,038.23/x
  3. Step 3: Cross multiply
    1,604.70x = 2,214.78 × 1,038.23
  4. Step 4: Simplify right side
    1,604.70x = 2,299,461.22
  5. Step 5: Solve for x
    x = 2,299,461.22/1,604.70
  6. Step 6: Final answer
    x = 1,432.95

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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.