Home / 2,389.70-3,297.99-1,395.30

Finding the Fourth Proportional to 2,389.70, 3,297.99 and 1,395.30

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Solution

The fourth proportional to 2,389.70, 3,297.99 and 1,395.30 is: 1,925.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.70 : 3,297.99 = 1,395.30 : x
  2. Step 2: Convert to fraction form
    2,389.70/3,297.99 = 1,395.30/x
  3. Step 3: Cross multiply
    2,389.70x = 3,297.99 × 1,395.30
  4. Step 4: Simplify right side
    2,389.70x = 4,601,703.05
  5. Step 5: Solve for x
    x = 4,601,703.05/2,389.70
  6. Step 6: Final answer
    x = 1,925.64

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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.