Home / 2,847.46-3,929.88-1,669

Finding the Fourth Proportional to 2,847.46, 3,929.88 and 1,669

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Solution

The fourth proportional to 2,847.46, 3,929.88 and 1,669 is: 2,303.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.46 : 3,929.88 = 1,669 : x
  2. Step 2: Convert to fraction form
    2,847.46/3,929.88 = 1,669/x
  3. Step 3: Cross multiply
    2,847.46x = 3,929.88 × 1,669
  4. Step 4: Simplify right side
    2,847.46x = 6,558,969.72
  5. Step 5: Solve for x
    x = 6,558,969.72/2,847.46
  6. Step 6: Final answer
    x = 2,303.45

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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.