Home / 5,385.96-7,430.13-3,147.93

Finding the Fourth Proportional to 5,385.96, 7,430.13 and 3,147.93

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Solution

The fourth proportional to 5,385.96, 7,430.13 and 3,147.93 is: 4,342.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.96 : 7,430.13 = 3,147.93 : x
  2. Step 2: Convert to fraction form
    5,385.96/7,430.13 = 3,147.93/x
  3. Step 3: Cross multiply
    5,385.96x = 7,430.13 × 3,147.93
  4. Step 4: Simplify right side
    5,385.96x = 23,389,529.13
  5. Step 5: Solve for x
    x = 23,389,529.13/5,385.96
  6. Step 6: Final answer
    x = 4,342.69

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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.