Home / 3,390.02-4,678.24-1,974.55

Finding the Fourth Proportional to 3,390.02, 4,678.24 and 1,974.55

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Solution

The fourth proportional to 3,390.02, 4,678.24 and 1,974.55 is: 2,724.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.02 : 4,678.24 = 1,974.55 : x
  2. Step 2: Convert to fraction form
    3,390.02/4,678.24 = 1,974.55/x
  3. Step 3: Cross multiply
    3,390.02x = 4,678.24 × 1,974.55
  4. Step 4: Simplify right side
    3,390.02x = 9,237,418.79
  5. Step 5: Solve for x
    x = 9,237,418.79/3,390.02
  6. Step 6: Final answer
    x = 2,724.89

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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.