Home / 2,730.78-4,090.02-1,805.06

Finding the Fourth Proportional to 2,730.78, 4,090.02 and 1,805.06

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Solution

The fourth proportional to 2,730.78, 4,090.02 and 1,805.06 is: 2,703.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,730.78 : 4,090.02 = 1,805.06 : x
  2. Step 2: Convert to fraction form
    2,730.78/4,090.02 = 1,805.06/x
  3. Step 3: Cross multiply
    2,730.78x = 4,090.02 × 1,805.06
  4. Step 4: Simplify right side
    2,730.78x = 7,382,731.50
  5. Step 5: Solve for x
    x = 7,382,731.50/2,730.78
  6. Step 6: Final answer
    x = 2,703.52

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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.