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Finding the Fourth Proportional to 1,703.10, 2,551.05 and 779.43

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Solution

The fourth proportional to 1,703.10, 2,551.05 and 779.43 is: 1,167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,703.10 : 2,551.05 = 779.43 : x
  2. Step 2: Convert to fraction form
    1,703.10/2,551.05 = 779.43/x
  3. Step 3: Cross multiply
    1,703.10x = 2,551.05 × 779.43
  4. Step 4: Simplify right side
    1,703.10x = 1,988,367.82
  5. Step 5: Solve for x
    x = 1,988,367.82/1,703.10
  6. Step 6: Final answer
    x = 1,167.50

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1.5x scale

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.