Home / 2,828.70-3,904.95-1,886.07

Finding the Fourth Proportional to 2,828.70, 3,904.95 and 1,886.07

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Solution

The fourth proportional to 2,828.70, 3,904.95 and 1,886.07 is: 2,603.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.70 : 3,904.95 = 1,886.07 : x
  2. Step 2: Convert to fraction form
    2,828.70/3,904.95 = 1,886.07/x
  3. Step 3: Cross multiply
    2,828.70x = 3,904.95 × 1,886.07
  4. Step 4: Simplify right side
    2,828.70x = 7,365,009.05
  5. Step 5: Solve for x
    x = 7,365,009.05/2,828.70
  6. Step 6: Final answer
    x = 2,603.67

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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.