Home / 1,875.96-2,812.93-1,329.21

Finding the Fourth Proportional to 1,875.96, 2,812.93 and 1,329.21

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Solution

The fourth proportional to 1,875.96, 2,812.93 and 1,329.21 is: 1,993.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,875.96 : 2,812.93 = 1,329.21 : x
  2. Step 2: Convert to fraction form
    1,875.96/2,812.93 = 1,329.21/x
  3. Step 3: Cross multiply
    1,875.96x = 2,812.93 × 1,329.21
  4. Step 4: Simplify right side
    1,875.96x = 3,738,971.36
  5. Step 5: Solve for x
    x = 3,738,971.36/1,875.96
  6. Step 6: Final answer
    x = 1,993.10

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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.