Home / 1,548.45-2,320.83-817.65

Finding the Fourth Proportional to 1,548.45, 2,320.83 and 817.65

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Solution

The fourth proportional to 1,548.45, 2,320.83 and 817.65 is: 1,225.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.45 : 2,320.83 = 817.65 : x
  2. Step 2: Convert to fraction form
    1,548.45/2,320.83 = 817.65/x
  3. Step 3: Cross multiply
    1,548.45x = 2,320.83 × 817.65
  4. Step 4: Simplify right side
    1,548.45x = 1,897,626.65
  5. Step 5: Solve for x
    x = 1,897,626.65/1,548.45
  6. Step 6: Final answer
    x = 1,225.50

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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.