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Finding the Fourth Proportional to 1,702.72, 2,551.86 and 1,482.40

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Solution

The fourth proportional to 1,702.72, 2,551.86 and 1,482.40 is: 2,221.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,702.72 : 2,551.86 = 1,482.40 : x
  2. Step 2: Convert to fraction form
    1,702.72/2,551.86 = 1,482.40/x
  3. Step 3: Cross multiply
    1,702.72x = 2,551.86 × 1,482.40
  4. Step 4: Simplify right side
    1,702.72x = 3,782,877.26
  5. Step 5: Solve for x
    x = 3,782,877.26/1,702.72
  6. Step 6: Final answer
    x = 2,221.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.