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Finding the Fourth Proportional to 4,810.88, 7,211.28 and 1,889.12

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Solution

The fourth proportional to 4,810.88, 7,211.28 and 1,889.12 is: 2,831.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,810.88 : 7,211.28 = 1,889.12 : x
  2. Step 2: Convert to fraction form
    4,810.88/7,211.28 = 1,889.12/x
  3. Step 3: Cross multiply
    4,810.88x = 7,211.28 × 1,889.12
  4. Step 4: Simplify right side
    4,810.88x = 13,622,973.27
  5. Step 5: Solve for x
    x = 13,622,973.27/4,810.88
  6. Step 6: Final answer
    x = 2,831.70

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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.