Home / 1,772.64-2,445.69-986.55

Finding the Fourth Proportional to 1,772.64, 2,445.69 and 986.55

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Solution

The fourth proportional to 1,772.64, 2,445.69 and 986.55 is: 1,361.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.64 : 2,445.69 = 986.55 : x
  2. Step 2: Convert to fraction form
    1,772.64/2,445.69 = 986.55/x
  3. Step 3: Cross multiply
    1,772.64x = 2,445.69 × 986.55
  4. Step 4: Simplify right side
    1,772.64x = 2,412,795.47
  5. Step 5: Solve for x
    x = 2,412,795.47/1,772.64
  6. Step 6: Final answer
    x = 1,361.13

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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.