Home / 4,280.36-6,418.38-2,085.80

Finding the Fourth Proportional to 4,280.36, 6,418.38 and 2,085.80

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Solution

The fourth proportional to 4,280.36, 6,418.38 and 2,085.80 is: 3,127.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.36 : 6,418.38 = 2,085.80 : x
  2. Step 2: Convert to fraction form
    4,280.36/6,418.38 = 2,085.80/x
  3. Step 3: Cross multiply
    4,280.36x = 6,418.38 × 2,085.80
  4. Step 4: Simplify right side
    4,280.36x = 13,387,457.00
  5. Step 5: Solve for x
    x = 13,387,457.00/4,280.36
  6. Step 6: Final answer
    x = 3,127.65

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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.