Home / 3,047.02-4,206.74-1,970.80

Finding the Fourth Proportional to 3,047.02, 4,206.74 and 1,970.80

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Solution

The fourth proportional to 3,047.02, 4,206.74 and 1,970.80 is: 2,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,047.02 : 4,206.74 = 1,970.80 : x
  2. Step 2: Convert to fraction form
    3,047.02/4,206.74 = 1,970.80/x
  3. Step 3: Cross multiply
    3,047.02x = 4,206.74 × 1,970.80
  4. Step 4: Simplify right side
    3,047.02x = 8,290,622.82
  5. Step 5: Solve for x
    x = 8,290,622.82/3,047.02
  6. Step 6: Final answer
    x = 2,720.90

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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.