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Finding the Fourth Proportional to 2,803.55, 3,840.88 and 2,698.45

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Solution

The fourth proportional to 2,803.55, 3,840.88 and 2,698.45 is: 3,696.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.55 : 3,840.88 = 2,698.45 : x
  2. Step 2: Convert to fraction form
    2,803.55/3,840.88 = 2,698.45/x
  3. Step 3: Cross multiply
    2,803.55x = 3,840.88 × 2,698.45
  4. Step 4: Simplify right side
    2,803.55x = 10,364,438.01
  5. Step 5: Solve for x
    x = 10,364,438.01/2,803.55
  6. Step 6: Final answer
    x = 3,696.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.