Home / 3,903.69-5,386.96-2,225.64

Finding the Fourth Proportional to 3,903.69, 5,386.96 and 2,225.64

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Solution

The fourth proportional to 3,903.69, 5,386.96 and 2,225.64 is: 3,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.69 : 5,386.96 = 2,225.64 : x
  2. Step 2: Convert to fraction form
    3,903.69/5,386.96 = 2,225.64/x
  3. Step 3: Cross multiply
    3,903.69x = 5,386.96 × 2,225.64
  4. Step 4: Simplify right side
    3,903.69x = 11,989,395.59
  5. Step 5: Solve for x
    x = 11,989,395.59/3,903.69
  6. Step 6: Final answer
    x = 3,071.30

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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.