Home / 2,085.61-2,878.14-1,299.66

Finding the Fourth Proportional to 2,085.61, 2,878.14 and 1,299.66

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Solution

The fourth proportional to 2,085.61, 2,878.14 and 1,299.66 is: 1,793.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085.61 : 2,878.14 = 1,299.66 : x
  2. Step 2: Convert to fraction form
    2,085.61/2,878.14 = 1,299.66/x
  3. Step 3: Cross multiply
    2,085.61x = 2,878.14 × 1,299.66
  4. Step 4: Simplify right side
    2,085.61x = 3,740,597.51
  5. Step 5: Solve for x
    x = 3,740,597.51/2,085.61
  6. Step 6: Final answer
    x = 1,793.53

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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.