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Finding the Fourth Proportional to 4,991.52, 7,487.22 and 1,913.52

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Solution

The fourth proportional to 4,991.52, 7,487.22 and 1,913.52 is: 2,870.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.52 : 7,487.22 = 1,913.52 : x
  2. Step 2: Convert to fraction form
    4,991.52/7,487.22 = 1,913.52/x
  3. Step 3: Cross multiply
    4,991.52x = 7,487.22 × 1,913.52
  4. Step 4: Simplify right side
    4,991.52x = 14,326,945.21
  5. Step 5: Solve for x
    x = 14,326,945.21/4,991.52
  6. Step 6: Final answer
    x = 2,870.26

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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.