Home / 1,875.94-2,811.21-1,378.44

Finding the Fourth Proportional to 1,875.94, 2,811.21 and 1,378.44

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Solution

The fourth proportional to 1,875.94, 2,811.21 and 1,378.44 is: 2,065.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.94 : 2,811.21 = 1,378.44 : x
  2. Step 2: Convert to fraction form
    1,875.94/2,811.21 = 1,378.44/x
  3. Step 3: Cross multiply
    1,875.94x = 2,811.21 × 1,378.44
  4. Step 4: Simplify right side
    1,875.94x = 3,875,084.31
  5. Step 5: Solve for x
    x = 3,875,084.31/1,875.94
  6. Step 6: Final answer
    x = 2,065.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.