Home / 2,224.45-3,070.32-1,428.32

Finding the Fourth Proportional to 2,224.45, 3,070.32 and 1,428.32

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Solution

The fourth proportional to 2,224.45, 3,070.32 and 1,428.32 is: 1,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,224.45 : 3,070.32 = 1,428.32 : x
  2. Step 2: Convert to fraction form
    2,224.45/3,070.32 = 1,428.32/x
  3. Step 3: Cross multiply
    2,224.45x = 3,070.32 × 1,428.32
  4. Step 4: Simplify right side
    2,224.45x = 4,385,399.46
  5. Step 5: Solve for x
    x = 4,385,399.46/2,224.45
  6. Step 6: Final answer
    x = 1,971.45

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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.