Home / 2,960.80-4,085.28-1,718.80

Finding the Fourth Proportional to 2,960.80, 4,085.28 and 1,718.80

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Solution

The fourth proportional to 2,960.80, 4,085.28 and 1,718.80 is: 2,371.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,960.80 : 4,085.28 = 1,718.80 : x
  2. Step 2: Convert to fraction form
    2,960.80/4,085.28 = 1,718.80/x
  3. Step 3: Cross multiply
    2,960.80x = 4,085.28 × 1,718.80
  4. Step 4: Simplify right side
    2,960.80x = 7,021,779.26
  5. Step 5: Solve for x
    x = 7,021,779.26/2,960.80
  6. Step 6: Final answer
    x = 2,371.58

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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.