Home / 2,261.07-3,120.15-1,376.70

Finding the Fourth Proportional to 2,261.07, 3,120.15 and 1,376.70

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Solution

The fourth proportional to 2,261.07, 3,120.15 and 1,376.70 is: 1,899.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.07 : 3,120.15 = 1,376.70 : x
  2. Step 2: Convert to fraction form
    2,261.07/3,120.15 = 1,376.70/x
  3. Step 3: Cross multiply
    2,261.07x = 3,120.15 × 1,376.70
  4. Step 4: Simplify right side
    2,261.07x = 4,295,510.51
  5. Step 5: Solve for x
    x = 4,295,510.51/2,261.07
  6. Step 6: Final answer
    x = 1,899.77

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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.