Home / 2,378.51-3,280.36-1,782.41

Finding the Fourth Proportional to 2,378.51, 3,280.36 and 1,782.41

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Solution

The fourth proportional to 2,378.51, 3,280.36 and 1,782.41 is: 2,458.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.51 : 3,280.36 = 1,782.41 : x
  2. Step 2: Convert to fraction form
    2,378.51/3,280.36 = 1,782.41/x
  3. Step 3: Cross multiply
    2,378.51x = 3,280.36 × 1,782.41
  4. Step 4: Simplify right side
    2,378.51x = 5,846,946.47
  5. Step 5: Solve for x
    x = 5,846,946.47/2,378.51
  6. Step 6: Final answer
    x = 2,458.24

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1.5x scale

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.