Home / 2,696.40-4,039.20-1,875.60

Finding the Fourth Proportional to 2,696.40, 4,039.20 and 1,875.60

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Solution

The fourth proportional to 2,696.40, 4,039.20 and 1,875.60 is: 2,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,696.40 : 4,039.20 = 1,875.60 : x
  2. Step 2: Convert to fraction form
    2,696.40/4,039.20 = 1,875.60/x
  3. Step 3: Cross multiply
    2,696.40x = 4,039.20 × 1,875.60
  4. Step 4: Simplify right side
    2,696.40x = 7,575,923.52
  5. Step 5: Solve for x
    x = 7,575,923.52/2,696.40
  6. Step 6: Final answer
    x = 2,809.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.