Home / 2,112.16-2,914.32-1,415.20

Finding the Fourth Proportional to 2,112.16, 2,914.32 and 1,415.20

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Solution

The fourth proportional to 2,112.16, 2,914.32 and 1,415.20 is: 1,952.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.16 : 2,914.32 = 1,415.20 : x
  2. Step 2: Convert to fraction form
    2,112.16/2,914.32 = 1,415.20/x
  3. Step 3: Cross multiply
    2,112.16x = 2,914.32 × 1,415.20
  4. Step 4: Simplify right side
    2,112.16x = 4,124,345.66
  5. Step 5: Solve for x
    x = 4,124,345.66/2,112.16
  6. Step 6: Final answer
    x = 1,952.67

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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.