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Finding the Fourth Proportional to 1,574.82, 2,173.11 and 902.67

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Solution

The fourth proportional to 1,574.82, 2,173.11 and 902.67 is: 1,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.82 : 2,173.11 = 902.67 : x
  2. Step 2: Convert to fraction form
    1,574.82/2,173.11 = 902.67/x
  3. Step 3: Cross multiply
    1,574.82x = 2,173.11 × 902.67
  4. Step 4: Simplify right side
    1,574.82x = 1,961,601.20
  5. Step 5: Solve for x
    x = 1,961,601.20/1,574.82
  6. Step 6: Final answer
    x = 1,245.60

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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.