Home / 2,980.77-4,113.48-1,802.62

Finding the Fourth Proportional to 2,980.77, 4,113.48 and 1,802.62

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Solution

The fourth proportional to 2,980.77, 4,113.48 and 1,802.62 is: 2,487.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.77 : 4,113.48 = 1,802.62 : x
  2. Step 2: Convert to fraction form
    2,980.77/4,113.48 = 1,802.62/x
  3. Step 3: Cross multiply
    2,980.77x = 4,113.48 × 1,802.62
  4. Step 4: Simplify right side
    2,980.77x = 7,415,041.32
  5. Step 5: Solve for x
    x = 7,415,041.32/2,980.77
  6. Step 6: Final answer
    x = 2,487.63

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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.