Home / 2,782.48-3,838.40-1,602.80

Finding the Fourth Proportional to 2,782.48, 3,838.40 and 1,602.80

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Solution

The fourth proportional to 2,782.48, 3,838.40 and 1,602.80 is: 2,211.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.48 : 3,838.40 = 1,602.80 : x
  2. Step 2: Convert to fraction form
    2,782.48/3,838.40 = 1,602.80/x
  3. Step 3: Cross multiply
    2,782.48x = 3,838.40 × 1,602.80
  4. Step 4: Simplify right side
    2,782.48x = 6,152,187.52
  5. Step 5: Solve for x
    x = 6,152,187.52/2,782.48
  6. Step 6: Final answer
    x = 2,211.04

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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.