Home / 2,389.78-3,298.98-1,604.26

Finding the Fourth Proportional to 2,389.78, 3,298.98 and 1,604.26

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Solution

The fourth proportional to 2,389.78, 3,298.98 and 1,604.26 is: 2,214.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.78 : 3,298.98 = 1,604.26 : x
  2. Step 2: Convert to fraction form
    2,389.78/3,298.98 = 1,604.26/x
  3. Step 3: Cross multiply
    2,389.78x = 3,298.98 × 1,604.26
  4. Step 4: Simplify right side
    2,389.78x = 5,292,421.65
  5. Step 5: Solve for x
    x = 5,292,421.65/2,389.78
  6. Step 6: Final answer
    x = 2,214.61

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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.