Home / 1,563.71-2,158.39-934.68

Finding the Fourth Proportional to 1,563.71, 2,158.39 and 934.68

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Solution

The fourth proportional to 1,563.71, 2,158.39 and 934.68 is: 1,290.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.71 : 2,158.39 = 934.68 : x
  2. Step 2: Convert to fraction form
    1,563.71/2,158.39 = 934.68/x
  3. Step 3: Cross multiply
    1,563.71x = 2,158.39 × 934.68
  4. Step 4: Simplify right side
    1,563.71x = 2,017,401.63
  5. Step 5: Solve for x
    x = 2,017,401.63/1,563.71
  6. Step 6: Final answer
    x = 1,290.14

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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.