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Finding the Fourth Proportional to 2,403.70, 3,605.55 and 2,019.70

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Solution

The fourth proportional to 2,403.70, 3,605.55 and 2,019.70 is: 3,029.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,403.70 : 3,605.55 = 2,019.70 : x
  2. Step 2: Convert to fraction form
    2,403.70/3,605.55 = 2,019.70/x
  3. Step 3: Cross multiply
    2,403.70x = 3,605.55 × 2,019.70
  4. Step 4: Simplify right side
    2,403.70x = 7,282,129.34
  5. Step 5: Solve for x
    x = 7,282,129.34/2,403.70
  6. Step 6: Final answer
    x = 3,029.55

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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.