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Finding the Fourth Proportional to 2,870.24, 4,305.40 and 818.24

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Solution

The fourth proportional to 2,870.24, 4,305.40 and 818.24 is: 1,227.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.24 : 4,305.40 = 818.24 : x
  2. Step 2: Convert to fraction form
    2,870.24/4,305.40 = 818.24/x
  3. Step 3: Cross multiply
    2,870.24x = 4,305.40 × 818.24
  4. Step 4: Simplify right side
    2,870.24x = 3,522,850.50
  5. Step 5: Solve for x
    x = 3,522,850.50/2,870.24
  6. Step 6: Final answer
    x = 1,227.37

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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.