Home / 2,029.40-2,800.72-1,145.28

Finding the Fourth Proportional to 2,029.40, 2,800.72 and 1,145.28

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Solution

The fourth proportional to 2,029.40, 2,800.72 and 1,145.28 is: 1,580.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,029.40 : 2,800.72 = 1,145.28 : x
  2. Step 2: Convert to fraction form
    2,029.40/2,800.72 = 1,145.28/x
  3. Step 3: Cross multiply
    2,029.40x = 2,800.72 × 1,145.28
  4. Step 4: Simplify right side
    2,029.40x = 3,207,608.60
  5. Step 5: Solve for x
    x = 3,207,608.60/2,029.40
  6. Step 6: Final answer
    x = 1,580.57

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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.