Home / 3,138.02-4,328.59-2,075.80

Finding the Fourth Proportional to 3,138.02, 4,328.59 and 2,075.80

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Solution

The fourth proportional to 3,138.02, 4,328.59 and 2,075.80 is: 2,863.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.02 : 4,328.59 = 2,075.80 : x
  2. Step 2: Convert to fraction form
    3,138.02/4,328.59 = 2,075.80/x
  3. Step 3: Cross multiply
    3,138.02x = 4,328.59 × 2,075.80
  4. Step 4: Simplify right side
    3,138.02x = 8,985,287.12
  5. Step 5: Solve for x
    x = 8,985,287.12/3,138.02
  6. Step 6: Final answer
    x = 2,863.36

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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.