Home / 1,772.36-2,445.96-986.42

Finding the Fourth Proportional to 1,772.36, 2,445.96 and 986.42

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Solution

The fourth proportional to 1,772.36, 2,445.96 and 986.42 is: 1,361.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.36 : 2,445.96 = 986.42 : x
  2. Step 2: Convert to fraction form
    1,772.36/2,445.96 = 986.42/x
  3. Step 3: Cross multiply
    1,772.36x = 2,445.96 × 986.42
  4. Step 4: Simplify right side
    1,772.36x = 2,412,743.86
  5. Step 5: Solve for x
    x = 2,412,743.86/1,772.36
  6. Step 6: Final answer
    x = 1,361.32

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1.5x scale

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.