Home / 3,085.20-4,638.60-3,020.40

Finding the Fourth Proportional to 3,085.20, 4,638.60 and 3,020.40

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Solution

The fourth proportional to 3,085.20, 4,638.60 and 3,020.40 is: 4,541.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.20 : 4,638.60 = 3,020.40 : x
  2. Step 2: Convert to fraction form
    3,085.20/4,638.60 = 3,020.40/x
  3. Step 3: Cross multiply
    3,085.20x = 4,638.60 × 3,020.40
  4. Step 4: Simplify right side
    3,085.20x = 14,010,427.44
  5. Step 5: Solve for x
    x = 14,010,427.44/3,085.20
  6. Step 6: Final answer
    x = 4,541.17

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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.