Home / 3,112.53-4,288.80-2,116.07

Finding the Fourth Proportional to 3,112.53, 4,288.80 and 2,116.07

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Solution

The fourth proportional to 3,112.53, 4,288.80 and 2,116.07 is: 2,915.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.53 : 4,288.80 = 2,116.07 : x
  2. Step 2: Convert to fraction form
    3,112.53/4,288.80 = 2,116.07/x
  3. Step 3: Cross multiply
    3,112.53x = 4,288.80 × 2,116.07
  4. Step 4: Simplify right side
    3,112.53x = 9,075,415.81
  5. Step 5: Solve for x
    x = 9,075,415.81/3,112.53
  6. Step 6: Final answer
    x = 2,915.77

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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.