Home / 1,770.20-2,656.34-1,276.08

Finding the Fourth Proportional to 1,770.20, 2,656.34 and 1,276.08

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Solution

The fourth proportional to 1,770.20, 2,656.34 and 1,276.08 is: 1,914.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.20 : 2,656.34 = 1,276.08 : x
  2. Step 2: Convert to fraction form
    1,770.20/2,656.34 = 1,276.08/x
  3. Step 3: Cross multiply
    1,770.20x = 2,656.34 × 1,276.08
  4. Step 4: Simplify right side
    1,770.20x = 3,389,702.35
  5. Step 5: Solve for x
    x = 3,389,702.35/1,770.20
  6. Step 6: Final answer
    x = 1,914.87

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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.