Home / 3,688.88-5,090.85-2,117.48

Finding the Fourth Proportional to 3,688.88, 5,090.85 and 2,117.48

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Solution

The fourth proportional to 3,688.88, 5,090.85 and 2,117.48 is: 2,922.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.88 : 5,090.85 = 2,117.48 : x
  2. Step 2: Convert to fraction form
    3,688.88/5,090.85 = 2,117.48/x
  3. Step 3: Cross multiply
    3,688.88x = 5,090.85 × 2,117.48
  4. Step 4: Simplify right side
    3,688.88x = 10,779,747.60
  5. Step 5: Solve for x
    x = 10,779,747.60/3,688.88
  6. Step 6: Final answer
    x = 2,922.23

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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.