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Finding the Fourth Proportional to 1,417.92, 1,955.42 and 886.63

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Solution

The fourth proportional to 1,417.92, 1,955.42 and 886.63 is: 1,222.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.92 : 1,955.42 = 886.63 : x
  2. Step 2: Convert to fraction form
    1,417.92/1,955.42 = 886.63/x
  3. Step 3: Cross multiply
    1,417.92x = 1,955.42 × 886.63
  4. Step 4: Simplify right side
    1,417.92x = 1,733,729.60
  5. Step 5: Solve for x
    x = 1,733,729.60/1,417.92
  6. Step 6: Final answer
    x = 1,222.73

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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.