Home / 4,220.36-6,328.28-1,258.38

Finding the Fourth Proportional to 4,220.36, 6,328.28 and 1,258.38

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Solution

The fourth proportional to 4,220.36, 6,328.28 and 1,258.38 is: 1,886.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.36 : 6,328.28 = 1,258.38 : x
  2. Step 2: Convert to fraction form
    4,220.36/6,328.28 = 1,258.38/x
  3. Step 3: Cross multiply
    4,220.36x = 6,328.28 × 1,258.38
  4. Step 4: Simplify right side
    4,220.36x = 7,963,374.69
  5. Step 5: Solve for x
    x = 7,963,374.69/4,220.36
  6. Step 6: Final answer
    x = 1,886.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.