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Finding the Fourth Proportional to 3,090.70, 4,636.10 and 1,703.78

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Solution

The fourth proportional to 3,090.70, 4,636.10 and 1,703.78 is: 2,555.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.70 : 4,636.10 = 1,703.78 : x
  2. Step 2: Convert to fraction form
    3,090.70/4,636.10 = 1,703.78/x
  3. Step 3: Cross multiply
    3,090.70x = 4,636.10 × 1,703.78
  4. Step 4: Simplify right side
    3,090.70x = 7,898,862.76
  5. Step 5: Solve for x
    x = 7,898,862.76/3,090.70
  6. Step 6: Final answer
    x = 2,555.69

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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.