Home / 2,875.84-4,313.68-1,231.56

Finding the Fourth Proportional to 2,875.84, 4,313.68 and 1,231.56

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Solution

The fourth proportional to 2,875.84, 4,313.68 and 1,231.56 is: 1,847.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.84 : 4,313.68 = 1,231.56 : x
  2. Step 2: Convert to fraction form
    2,875.84/4,313.68 = 1,231.56/x
  3. Step 3: Cross multiply
    2,875.84x = 4,313.68 × 1,231.56
  4. Step 4: Simplify right side
    2,875.84x = 5,312,555.74
  5. Step 5: Solve for x
    x = 5,312,555.74/2,875.84
  6. Step 6: Final answer
    x = 1,847.31

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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.