Home / 3,120.02-4,681.40-1,658.81

Finding the Fourth Proportional to 3,120.02, 4,681.40 and 1,658.81

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Solution

The fourth proportional to 3,120.02, 4,681.40 and 1,658.81 is: 2,488.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.02 : 4,681.40 = 1,658.81 : x
  2. Step 2: Convert to fraction form
    3,120.02/4,681.40 = 1,658.81/x
  3. Step 3: Cross multiply
    3,120.02x = 4,681.40 × 1,658.81
  4. Step 4: Simplify right side
    3,120.02x = 7,765,556.54
  5. Step 5: Solve for x
    x = 7,765,556.54/3,120.02
  6. Step 6: Final answer
    x = 2,488.95

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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.