Home / 2,880.83-3,975.93-1,686.17

Finding the Fourth Proportional to 2,880.83, 3,975.93 and 1,686.17

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Solution

The fourth proportional to 2,880.83, 3,975.93 and 1,686.17 is: 2,327.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.83 : 3,975.93 = 1,686.17 : x
  2. Step 2: Convert to fraction form
    2,880.83/3,975.93 = 1,686.17/x
  3. Step 3: Cross multiply
    2,880.83x = 3,975.93 × 1,686.17
  4. Step 4: Simplify right side
    2,880.83x = 6,704,103.83
  5. Step 5: Solve for x
    x = 6,704,103.83/2,880.83
  6. Step 6: Final answer
    x = 2,327.14

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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.