Home / 1,298.18-1,947.24-324.26

Finding the Fourth Proportional to 1,298.18, 1,947.24 and 324.26

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Solution

The fourth proportional to 1,298.18, 1,947.24 and 324.26 is: 486.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.18 : 1,947.24 = 324.26 : x
  2. Step 2: Convert to fraction form
    1,298.18/1,947.24 = 324.26/x
  3. Step 3: Cross multiply
    1,298.18x = 1,947.24 × 324.26
  4. Step 4: Simplify right side
    1,298.18x = 631,412.04
  5. Step 5: Solve for x
    x = 631,412.04/1,298.18
  6. Step 6: Final answer
    x = 486.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.