Home / 3,935.18-5,430.59-2,166.83

Finding the Fourth Proportional to 3,935.18, 5,430.59 and 2,166.83

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Solution

The fourth proportional to 3,935.18, 5,430.59 and 2,166.83 is: 2,990.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.18 : 5,430.59 = 2,166.83 : x
  2. Step 2: Convert to fraction form
    3,935.18/5,430.59 = 2,166.83/x
  3. Step 3: Cross multiply
    3,935.18x = 5,430.59 × 2,166.83
  4. Step 4: Simplify right side
    3,935.18x = 11,767,155.83
  5. Step 5: Solve for x
    x = 11,767,155.83/3,935.18
  6. Step 6: Final answer
    x = 2,990.24

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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.