Home / 1,790.99-2,470.95-1,127.60

Finding the Fourth Proportional to 1,790.99, 2,470.95 and 1,127.60

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Solution

The fourth proportional to 1,790.99, 2,470.95 and 1,127.60 is: 1,555.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.99 : 2,470.95 = 1,127.60 : x
  2. Step 2: Convert to fraction form
    1,790.99/2,470.95 = 1,127.60/x
  3. Step 3: Cross multiply
    1,790.99x = 2,470.95 × 1,127.60
  4. Step 4: Simplify right side
    1,790.99x = 2,786,249.40
  5. Step 5: Solve for x
    x = 2,786,249.40/1,790.99
  6. Step 6: Final answer
    x = 1,555.70

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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.