Home / 1,215.79-1,823.53-338.36

Finding the Fourth Proportional to 1,215.79, 1,823.53 and 338.36

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Solution

The fourth proportional to 1,215.79, 1,823.53 and 338.36 is: 507.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.79 : 1,823.53 = 338.36 : x
  2. Step 2: Convert to fraction form
    1,215.79/1,823.53 = 338.36/x
  3. Step 3: Cross multiply
    1,215.79x = 1,823.53 × 338.36
  4. Step 4: Simplify right side
    1,215.79x = 617,009.61
  5. Step 5: Solve for x
    x = 617,009.61/1,215.79
  6. Step 6: Final answer
    x = 507.50

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Half scale
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Double scale
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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.