Home / 2,491.19-3,439.08-1,930.40

Finding the Fourth Proportional to 2,491.19, 3,439.08 and 1,930.40

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Solution

The fourth proportional to 2,491.19, 3,439.08 and 1,930.40 is: 2,664.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.19 : 3,439.08 = 1,930.40 : x
  2. Step 2: Convert to fraction form
    2,491.19/3,439.08 = 1,930.40/x
  3. Step 3: Cross multiply
    2,491.19x = 3,439.08 × 1,930.40
  4. Step 4: Simplify right side
    2,491.19x = 6,638,782.84
  5. Step 5: Solve for x
    x = 6,638,782.84/2,491.19
  6. Step 6: Final answer
    x = 2,664.91

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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.