Home / 3,215.56-4,823.40-1,485.40

Finding the Fourth Proportional to 3,215.56, 4,823.40 and 1,485.40

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Solution

The fourth proportional to 3,215.56, 4,823.40 and 1,485.40 is: 2,228.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.56 : 4,823.40 = 1,485.40 : x
  2. Step 2: Convert to fraction form
    3,215.56/4,823.40 = 1,485.40/x
  3. Step 3: Cross multiply
    3,215.56x = 4,823.40 × 1,485.40
  4. Step 4: Simplify right side
    3,215.56x = 7,164,678.36
  5. Step 5: Solve for x
    x = 7,164,678.36/3,215.56
  6. Step 6: Final answer
    x = 2,228.13

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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.