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Finding the Fourth Proportional to 5,351.81, 7,390.02 and 4,023.20

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Solution

The fourth proportional to 5,351.81, 7,390.02 and 4,023.20 is: 5,555.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,351.81 : 7,390.02 = 4,023.20 : x
  2. Step 2: Convert to fraction form
    5,351.81/7,390.02 = 4,023.20/x
  3. Step 3: Cross multiply
    5,351.81x = 7,390.02 × 4,023.20
  4. Step 4: Simplify right side
    5,351.81x = 29,731,491.51
  5. Step 5: Solve for x
    x = 29,731,491.51/5,351.81
  6. Step 6: Final answer
    x = 5,555.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.