Home / 3,838.69-5,297.02-2,160.06

Finding the Fourth Proportional to 3,838.69, 5,297.02 and 2,160.06

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Solution

The fourth proportional to 3,838.69, 5,297.02 and 2,160.06 is: 2,980.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838.69 : 5,297.02 = 2,160.06 : x
  2. Step 2: Convert to fraction form
    3,838.69/5,297.02 = 2,160.06/x
  3. Step 3: Cross multiply
    3,838.69x = 5,297.02 × 2,160.06
  4. Step 4: Simplify right side
    3,838.69x = 11,441,881.02
  5. Step 5: Solve for x
    x = 11,441,881.02/3,838.69
  6. Step 6: Final answer
    x = 2,980.67

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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.