Home / 2,390.56-3,298.81-1,328.24

Finding the Fourth Proportional to 2,390.56, 3,298.81 and 1,328.24

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Solution

The fourth proportional to 2,390.56, 3,298.81 and 1,328.24 is: 1,832.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.56 : 3,298.81 = 1,328.24 : x
  2. Step 2: Convert to fraction form
    2,390.56/3,298.81 = 1,328.24/x
  3. Step 3: Cross multiply
    2,390.56x = 3,298.81 × 1,328.24
  4. Step 4: Simplify right side
    2,390.56x = 4,381,588.26
  5. Step 5: Solve for x
    x = 4,381,588.26/2,390.56
  6. Step 6: Final answer
    x = 1,832.87

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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.