Home / 2,816.87-3,887.60-1,698.35

Finding the Fourth Proportional to 2,816.87, 3,887.60 and 1,698.35

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Solution

The fourth proportional to 2,816.87, 3,887.60 and 1,698.35 is: 2,343.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.87 : 3,887.60 = 1,698.35 : x
  2. Step 2: Convert to fraction form
    2,816.87/3,887.60 = 1,698.35/x
  3. Step 3: Cross multiply
    2,816.87x = 3,887.60 × 1,698.35
  4. Step 4: Simplify right side
    2,816.87x = 6,602,477.53
  5. Step 5: Solve for x
    x = 6,602,477.53/2,816.87
  6. Step 6: Final answer
    x = 2,343.91

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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.