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Finding the Fourth Proportional to 1,558.53, 2,150.51 and 886.23

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Solution

The fourth proportional to 1,558.53, 2,150.51 and 886.23 is: 1,222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.53 : 2,150.51 = 886.23 : x
  2. Step 2: Convert to fraction form
    1,558.53/2,150.51 = 886.23/x
  3. Step 3: Cross multiply
    1,558.53x = 2,150.51 × 886.23
  4. Step 4: Simplify right side
    1,558.53x = 1,905,846.48
  5. Step 5: Solve for x
    x = 1,905,846.48/1,558.53
  6. Step 6: Final answer
    x = 1,222.85

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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.