Home / 3,090.78-4,630.59-2,048.31

Finding the Fourth Proportional to 3,090.78, 4,630.59 and 2,048.31

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Solution

The fourth proportional to 3,090.78, 4,630.59 and 2,048.31 is: 3,068.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.78 : 4,630.59 = 2,048.31 : x
  2. Step 2: Convert to fraction form
    3,090.78/4,630.59 = 2,048.31/x
  3. Step 3: Cross multiply
    3,090.78x = 4,630.59 × 2,048.31
  4. Step 4: Simplify right side
    3,090.78x = 9,484,883.80
  5. Step 5: Solve for x
    x = 9,484,883.80/3,090.78
  6. Step 6: Final answer
    x = 3,068.77

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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.