Home / 2,826.09-3,898.78-1,987.35

Finding the Fourth Proportional to 2,826.09, 3,898.78 and 1,987.35

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Solution

The fourth proportional to 2,826.09, 3,898.78 and 1,987.35 is: 2,741.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,826.09 : 3,898.78 = 1,987.35 : x
  2. Step 2: Convert to fraction form
    2,826.09/3,898.78 = 1,987.35/x
  3. Step 3: Cross multiply
    2,826.09x = 3,898.78 × 1,987.35
  4. Step 4: Simplify right side
    2,826.09x = 7,748,237.51
  5. Step 5: Solve for x
    x = 7,748,237.51/2,826.09
  6. Step 6: Final answer
    x = 2,741.68

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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.