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Finding the Fourth Proportional to 5,157.87, 7,734.83 and 1,870.17

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Solution

The fourth proportional to 5,157.87, 7,734.83 and 1,870.17 is: 2,804.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.87 : 7,734.83 = 1,870.17 : x
  2. Step 2: Convert to fraction form
    5,157.87/7,734.83 = 1,870.17/x
  3. Step 3: Cross multiply
    5,157.87x = 7,734.83 × 1,870.17
  4. Step 4: Simplify right side
    5,157.87x = 14,465,437.67
  5. Step 5: Solve for x
    x = 14,465,437.67/5,157.87
  6. Step 6: Final answer
    x = 2,804.54

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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.