Home / 3,935.31-5,430.62-2,166.93

Finding the Fourth Proportional to 3,935.31, 5,430.62 and 2,166.93

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Solution

The fourth proportional to 3,935.31, 5,430.62 and 2,166.93 is: 2,990.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.31 : 5,430.62 = 2,166.93 : x
  2. Step 2: Convert to fraction form
    3,935.31/5,430.62 = 2,166.93/x
  3. Step 3: Cross multiply
    3,935.31x = 5,430.62 × 2,166.93
  4. Step 4: Simplify right side
    3,935.31x = 11,767,778.81
  5. Step 5: Solve for x
    x = 11,767,778.81/3,935.31
  6. Step 6: Final answer
    x = 2,990.31

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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.