Home / 1,772.32-2,445.76-986.35

Finding the Fourth Proportional to 1,772.32, 2,445.76 and 986.35

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Solution

The fourth proportional to 1,772.32, 2,445.76 and 986.35 is: 1,361.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.32 : 2,445.76 = 986.35 : x
  2. Step 2: Convert to fraction form
    1,772.32/2,445.76 = 986.35/x
  3. Step 3: Cross multiply
    1,772.32x = 2,445.76 × 986.35
  4. Step 4: Simplify right side
    1,772.32x = 2,412,375.38
  5. Step 5: Solve for x
    x = 2,412,375.38/1,772.32
  6. Step 6: Final answer
    x = 1,361.14

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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.