Home / 2,956.45-4,436.70-1,640.20

Finding the Fourth Proportional to 2,956.45, 4,436.70 and 1,640.20

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Solution

The fourth proportional to 2,956.45, 4,436.70 and 1,640.20 is: 2,461.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,956.45 : 4,436.70 = 1,640.20 : x
  2. Step 2: Convert to fraction form
    2,956.45/4,436.70 = 1,640.20/x
  3. Step 3: Cross multiply
    2,956.45x = 4,436.70 × 1,640.20
  4. Step 4: Simplify right side
    2,956.45x = 7,277,075.34
  5. Step 5: Solve for x
    x = 7,277,075.34/2,956.45
  6. Step 6: Final answer
    x = 2,461.42

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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.