Home / 2,045.40-2,823.58-1,299.80

Finding the Fourth Proportional to 2,045.40, 2,823.58 and 1,299.80

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Solution

The fourth proportional to 2,045.40, 2,823.58 and 1,299.80 is: 1,794.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,045.40 : 2,823.58 = 1,299.80 : x
  2. Step 2: Convert to fraction form
    2,045.40/2,823.58 = 1,299.80/x
  3. Step 3: Cross multiply
    2,045.40x = 2,823.58 × 1,299.80
  4. Step 4: Simplify right side
    2,045.40x = 3,670,089.28
  5. Step 5: Solve for x
    x = 3,670,089.28/2,045.40
  6. Step 6: Final answer
    x = 1,794.31

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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.