Home / 2,586.30-3,878.64-1,491.18

Finding the Fourth Proportional to 2,586.30, 3,878.64 and 1,491.18

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Solution

The fourth proportional to 2,586.30, 3,878.64 and 1,491.18 is: 2,236.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,586.30 : 3,878.64 = 1,491.18 : x
  2. Step 2: Convert to fraction form
    2,586.30/3,878.64 = 1,491.18/x
  3. Step 3: Cross multiply
    2,586.30x = 3,878.64 × 1,491.18
  4. Step 4: Simplify right side
    2,586.30x = 5,783,750.40
  5. Step 5: Solve for x
    x = 5,783,750.40/2,586.30
  6. Step 6: Final answer
    x = 2,236.30

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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.