Home / 1,816.37-2,506.47-1,008.78

Finding the Fourth Proportional to 1,816.37, 2,506.47 and 1,008.78

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Solution

The fourth proportional to 1,816.37, 2,506.47 and 1,008.78 is: 1,392.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.37 : 2,506.47 = 1,008.78 : x
  2. Step 2: Convert to fraction form
    1,816.37/2,506.47 = 1,008.78/x
  3. Step 3: Cross multiply
    1,816.37x = 2,506.47 × 1,008.78
  4. Step 4: Simplify right side
    1,816.37x = 2,528,476.81
  5. Step 5: Solve for x
    x = 2,528,476.81/1,816.37
  6. Step 6: Final answer
    x = 1,392.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.