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Finding the Fourth Proportional to 2,090.08, 3,135.80 and 703.45

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Solution

The fourth proportional to 2,090.08, 3,135.80 and 703.45 is: 1,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.08 : 3,135.80 = 703.45 : x
  2. Step 2: Convert to fraction form
    2,090.08/3,135.80 = 703.45/x
  3. Step 3: Cross multiply
    2,090.08x = 3,135.80 × 703.45
  4. Step 4: Simplify right side
    2,090.08x = 2,205,878.51
  5. Step 5: Solve for x
    x = 2,205,878.51/2,090.08
  6. Step 6: Final answer
    x = 1,055.40

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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.