Home / 1,809.60-2,497.32-1,111.20

Finding the Fourth Proportional to 1,809.60, 2,497.32 and 1,111.20

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Solution

The fourth proportional to 1,809.60, 2,497.32 and 1,111.20 is: 1,533.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.60 : 2,497.32 = 1,111.20 : x
  2. Step 2: Convert to fraction form
    1,809.60/2,497.32 = 1,111.20/x
  3. Step 3: Cross multiply
    1,809.60x = 2,497.32 × 1,111.20
  4. Step 4: Simplify right side
    1,809.60x = 2,775,021.98
  5. Step 5: Solve for x
    x = 2,775,021.98/1,809.60
  6. Step 6: Final answer
    x = 1,533.50

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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.