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Finding the Fourth Proportional to 1,948.78, 2,923.24 and 561.99

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Solution

The fourth proportional to 1,948.78, 2,923.24 and 561.99 is: 843.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.78 : 2,923.24 = 561.99 : x
  2. Step 2: Convert to fraction form
    1,948.78/2,923.24 = 561.99/x
  3. Step 3: Cross multiply
    1,948.78x = 2,923.24 × 561.99
  4. Step 4: Simplify right side
    1,948.78x = 1,642,831.65
  5. Step 5: Solve for x
    x = 1,642,831.65/1,948.78
  6. Step 6: Final answer
    x = 843.01

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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.