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Finding the Fourth Proportional to 7,358.90, 11,038.37 and 1,812.37

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Solution

The fourth proportional to 7,358.90, 11,038.37 and 1,812.37 is: 2,718.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,358.90 : 11,038.37 = 1,812.37 : x
  2. Step 2: Convert to fraction form
    7,358.90/11,038.37 = 1,812.37/x
  3. Step 3: Cross multiply
    7,358.90x = 11,038.37 × 1,812.37
  4. Step 4: Simplify right side
    7,358.90x = 20,005,601.58
  5. Step 5: Solve for x
    x = 20,005,601.58/7,358.90
  6. Step 6: Final answer
    x = 2,718.56

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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.