Home / 2,090.30-3,135.45-1,118.30

Finding the Fourth Proportional to 2,090.30, 3,135.45 and 1,118.30

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Solution

The fourth proportional to 2,090.30, 3,135.45 and 1,118.30 is: 1,677.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.30 : 3,135.45 = 1,118.30 : x
  2. Step 2: Convert to fraction form
    2,090.30/3,135.45 = 1,118.30/x
  3. Step 3: Cross multiply
    2,090.30x = 3,135.45 × 1,118.30
  4. Step 4: Simplify right side
    2,090.30x = 3,506,373.74
  5. Step 5: Solve for x
    x = 3,506,373.74/2,090.30
  6. Step 6: Final answer
    x = 1,677.45

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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.