Home / 2,090.90-2,885.96-1,207.23

Finding the Fourth Proportional to 2,090.90, 2,885.96 and 1,207.23

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Solution

The fourth proportional to 2,090.90, 2,885.96 and 1,207.23 is: 1,666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.90 : 2,885.96 = 1,207.23 : x
  2. Step 2: Convert to fraction form
    2,090.90/2,885.96 = 1,207.23/x
  3. Step 3: Cross multiply
    2,090.90x = 2,885.96 × 1,207.23
  4. Step 4: Simplify right side
    2,090.90x = 3,484,017.49
  5. Step 5: Solve for x
    x = 3,484,017.49/2,090.90
  6. Step 6: Final answer
    x = 1,666.28

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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.