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Finding the Fourth Proportional to 1,611.03, 2,223.11 and 902.76

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Solution

The fourth proportional to 1,611.03, 2,223.11 and 902.76 is: 1,245.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.03 : 2,223.11 = 902.76 : x
  2. Step 2: Convert to fraction form
    1,611.03/2,223.11 = 902.76/x
  3. Step 3: Cross multiply
    1,611.03x = 2,223.11 × 902.76
  4. Step 4: Simplify right side
    1,611.03x = 2,006,934.78
  5. Step 5: Solve for x
    x = 2,006,934.78/1,611.03
  6. Step 6: Final answer
    x = 1,245.75

Related Problems

Find fourth proportional to 805.52, 1,111.56 and 451.38
Half scale
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Double scale
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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.