Home / 3,215.40-4,823.81-1,368.10

Finding the Fourth Proportional to 3,215.40, 4,823.81 and 1,368.10

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Solution

The fourth proportional to 3,215.40, 4,823.81 and 1,368.10 is: 2,052.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.40 : 4,823.81 = 1,368.10 : x
  2. Step 2: Convert to fraction form
    3,215.40/4,823.81 = 1,368.10/x
  3. Step 3: Cross multiply
    3,215.40x = 4,823.81 × 1,368.10
  4. Step 4: Simplify right side
    3,215.40x = 6,599,454.46
  5. Step 5: Solve for x
    x = 6,599,454.46/3,215.40
  6. Step 6: Final answer
    x = 2,052.45

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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.