Home / 2,405.39-3,315.80-1,880.51

Finding the Fourth Proportional to 2,405.39, 3,315.80 and 1,880.51

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Solution

The fourth proportional to 2,405.39, 3,315.80 and 1,880.51 is: 2,592.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.39 : 3,315.80 = 1,880.51 : x
  2. Step 2: Convert to fraction form
    2,405.39/3,315.80 = 1,880.51/x
  3. Step 3: Cross multiply
    2,405.39x = 3,315.80 × 1,880.51
  4. Step 4: Simplify right side
    2,405.39x = 6,235,383.18
  5. Step 5: Solve for x
    x = 6,235,383.18/2,405.39
  6. Step 6: Final answer
    x = 2,592.26

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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.