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Finding the Fourth Proportional to 1,548.61, 2,137.12 and 885.55

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Solution

The fourth proportional to 1,548.61, 2,137.12 and 885.55 is: 1,222.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.61 : 2,137.12 = 885.55 : x
  2. Step 2: Convert to fraction form
    1,548.61/2,137.12 = 885.55/x
  3. Step 3: Cross multiply
    1,548.61x = 2,137.12 × 885.55
  4. Step 4: Simplify right side
    1,548.61x = 1,892,519.06
  5. Step 5: Solve for x
    x = 1,892,519.06/1,548.61
  6. Step 6: Final answer
    x = 1,222.08

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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.