Home / 2,235.93-3,085.59-1,291.70

Finding the Fourth Proportional to 2,235.93, 3,085.59 and 1,291.70

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Solution

The fourth proportional to 2,235.93, 3,085.59 and 1,291.70 is: 1,782.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,235.93 : 3,085.59 = 1,291.70 : x
  2. Step 2: Convert to fraction form
    2,235.93/3,085.59 = 1,291.70/x
  3. Step 3: Cross multiply
    2,235.93x = 3,085.59 × 1,291.70
  4. Step 4: Simplify right side
    2,235.93x = 3,985,651.80
  5. Step 5: Solve for x
    x = 3,985,651.80/2,235.93
  6. Step 6: Final answer
    x = 1,782.55

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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.