Home / 2,390.44-3,298.70-1,328.28

Finding the Fourth Proportional to 2,390.44, 3,298.70 and 1,328.28

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Solution

The fourth proportional to 2,390.44, 3,298.70 and 1,328.28 is: 1,832.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.44 : 3,298.70 = 1,328.28 : x
  2. Step 2: Convert to fraction form
    2,390.44/3,298.70 = 1,328.28/x
  3. Step 3: Cross multiply
    2,390.44x = 3,298.70 × 1,328.28
  4. Step 4: Simplify right side
    2,390.44x = 4,381,605.81
  5. Step 5: Solve for x
    x = 4,381,605.81/2,390.44
  6. Step 6: Final answer
    x = 1,832.97

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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.