Home / 2,415.91-3,334.05-1,339.21

Finding the Fourth Proportional to 2,415.91, 3,334.05 and 1,339.21

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Solution

The fourth proportional to 2,415.91, 3,334.05 and 1,339.21 is: 1,848.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.91 : 3,334.05 = 1,339.21 : x
  2. Step 2: Convert to fraction form
    2,415.91/3,334.05 = 1,339.21/x
  3. Step 3: Cross multiply
    2,415.91x = 3,334.05 × 1,339.21
  4. Step 4: Simplify right side
    2,415.91x = 4,464,993.10
  5. Step 5: Solve for x
    x = 4,464,993.10/2,415.91
  6. Step 6: Final answer
    x = 1,848.16

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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.