Home / 1,364.32-2,036.48-1,218.40

Finding the Fourth Proportional to 1,364.32, 2,036.48 and 1,218.40

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Solution

The fourth proportional to 1,364.32, 2,036.48 and 1,218.40 is: 1,818.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,364.32 : 2,036.48 = 1,218.40 : x
  2. Step 2: Convert to fraction form
    1,364.32/2,036.48 = 1,218.40/x
  3. Step 3: Cross multiply
    1,364.32x = 2,036.48 × 1,218.40
  4. Step 4: Simplify right side
    1,364.32x = 2,481,247.23
  5. Step 5: Solve for x
    x = 2,481,247.23/1,364.32
  6. Step 6: Final answer
    x = 1,818.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.