Home / 2,212.50-3,054.63-1,428

Finding the Fourth Proportional to 2,212.50, 3,054.63 and 1,428

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Solution

The fourth proportional to 2,212.50, 3,054.63 and 1,428 is: 1,971.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.50 : 3,054.63 = 1,428 : x
  2. Step 2: Convert to fraction form
    2,212.50/3,054.63 = 1,428/x
  3. Step 3: Cross multiply
    2,212.50x = 3,054.63 × 1,428
  4. Step 4: Simplify right side
    2,212.50x = 4,362,011.64
  5. Step 5: Solve for x
    x = 4,362,011.64/2,212.50
  6. Step 6: Final answer
    x = 1,971.53

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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.