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Finding the Fourth Proportional to 2,441.81, 3,368.90 and 1,557.90

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Solution

The fourth proportional to 2,441.81, 3,368.90 and 1,557.90 is: 2,149.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,441.81 : 3,368.90 = 1,557.90 : x
  2. Step 2: Convert to fraction form
    2,441.81/3,368.90 = 1,557.90/x
  3. Step 3: Cross multiply
    2,441.81x = 3,368.90 × 1,557.90
  4. Step 4: Simplify right side
    2,441.81x = 5,248,413.20
  5. Step 5: Solve for x
    x = 5,248,413.20/2,441.81
  6. Step 6: Final answer
    x = 2,149.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.