Home / 1,790.07-2,471.19-1,230.75

Finding the Fourth Proportional to 1,790.07, 2,471.19 and 1,230.75

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Solution

The fourth proportional to 1,790.07, 2,471.19 and 1,230.75 is: 1,699.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.07 : 2,471.19 = 1,230.75 : x
  2. Step 2: Convert to fraction form
    1,790.07/2,471.19 = 1,230.75/x
  3. Step 3: Cross multiply
    1,790.07x = 2,471.19 × 1,230.75
  4. Step 4: Simplify right side
    1,790.07x = 3,041,417.09
  5. Step 5: Solve for x
    x = 3,041,417.09/1,790.07
  6. Step 6: Final answer
    x = 1,699.05

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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.