Home / 2,166.07-2,989.64-1,368.89

Finding the Fourth Proportional to 2,166.07, 2,989.64 and 1,368.89

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Solution

The fourth proportional to 2,166.07, 2,989.64 and 1,368.89 is: 1,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.07 : 2,989.64 = 1,368.89 : x
  2. Step 2: Convert to fraction form
    2,166.07/2,989.64 = 1,368.89/x
  3. Step 3: Cross multiply
    2,166.07x = 2,989.64 × 1,368.89
  4. Step 4: Simplify right side
    2,166.07x = 4,092,475.73
  5. Step 5: Solve for x
    x = 4,092,475.73/2,166.07
  6. Step 6: Final answer
    x = 1,889.36

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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.