Home / 1,631.61-2,251.60-885.57

Finding the Fourth Proportional to 1,631.61, 2,251.60 and 885.57

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Solution

The fourth proportional to 1,631.61, 2,251.60 and 885.57 is: 1,222.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.61 : 2,251.60 = 885.57 : x
  2. Step 2: Convert to fraction form
    1,631.61/2,251.60 = 885.57/x
  3. Step 3: Cross multiply
    1,631.61x = 2,251.60 × 885.57
  4. Step 4: Simplify right side
    1,631.61x = 1,993,949.41
  5. Step 5: Solve for x
    x = 1,993,949.41/1,631.61
  6. Step 6: Final answer
    x = 1,222.07

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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.