Home / 3,260.26-4,890.60-1,312.21

Finding the Fourth Proportional to 3,260.26, 4,890.60 and 1,312.21

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Solution

The fourth proportional to 3,260.26, 4,890.60 and 1,312.21 is: 1,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,260.26 : 4,890.60 = 1,312.21 : x
  2. Step 2: Convert to fraction form
    3,260.26/4,890.60 = 1,312.21/x
  3. Step 3: Cross multiply
    3,260.26x = 4,890.60 × 1,312.21
  4. Step 4: Simplify right side
    3,260.26x = 6,417,494.23
  5. Step 5: Solve for x
    x = 6,417,494.23/3,260.26
  6. Step 6: Final answer
    x = 1,968.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.