Home / 2,130.10-2,940.33-1,246.18

Finding the Fourth Proportional to 2,130.10, 2,940.33 and 1,246.18

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Solution

The fourth proportional to 2,130.10, 2,940.33 and 1,246.18 is: 1,720.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.10 : 2,940.33 = 1,246.18 : x
  2. Step 2: Convert to fraction form
    2,130.10/2,940.33 = 1,246.18/x
  3. Step 3: Cross multiply
    2,130.10x = 2,940.33 × 1,246.18
  4. Step 4: Simplify right side
    2,130.10x = 3,664,180.44
  5. Step 5: Solve for x
    x = 3,664,180.44/2,130.10
  6. Step 6: Final answer
    x = 1,720.19

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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.