Home / 5,247.16-7,870.74-1,351.60

Finding the Fourth Proportional to 5,247.16, 7,870.74 and 1,351.60

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Solution

The fourth proportional to 5,247.16, 7,870.74 and 1,351.60 is: 2,027.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.16 : 7,870.74 = 1,351.60 : x
  2. Step 2: Convert to fraction form
    5,247.16/7,870.74 = 1,351.60/x
  3. Step 3: Cross multiply
    5,247.16x = 7,870.74 × 1,351.60
  4. Step 4: Simplify right side
    5,247.16x = 10,638,092.18
  5. Step 5: Solve for x
    x = 10,638,092.18/5,247.16
  6. Step 6: Final answer
    x = 2,027.40

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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.