Home / 1,802.07-2,486.36-1,139.20

Finding the Fourth Proportional to 1,802.07, 2,486.36 and 1,139.20

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Solution

The fourth proportional to 1,802.07, 2,486.36 and 1,139.20 is: 1,571.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802.07 : 2,486.36 = 1,139.20 : x
  2. Step 2: Convert to fraction form
    1,802.07/2,486.36 = 1,139.20/x
  3. Step 3: Cross multiply
    1,802.07x = 2,486.36 × 1,139.20
  4. Step 4: Simplify right side
    1,802.07x = 2,832,457.94
  5. Step 5: Solve for x
    x = 2,832,457.94/1,802.07
  6. Step 6: Final answer
    x = 1,571.78

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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.