Home / 2,021.95-2,790.35-1,489.51

Finding the Fourth Proportional to 2,021.95, 2,790.35 and 1,489.51

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Solution

The fourth proportional to 2,021.95, 2,790.35 and 1,489.51 is: 2,055.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.95 : 2,790.35 = 1,489.51 : x
  2. Step 2: Convert to fraction form
    2,021.95/2,790.35 = 1,489.51/x
  3. Step 3: Cross multiply
    2,021.95x = 2,790.35 × 1,489.51
  4. Step 4: Simplify right side
    2,021.95x = 4,156,254.23
  5. Step 5: Solve for x
    x = 4,156,254.23/2,021.95
  6. Step 6: Final answer
    x = 2,055.57

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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.