Home / 2,384.49-3,290.58-1,390.35

Finding the Fourth Proportional to 2,384.49, 3,290.58 and 1,390.35

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Solution

The fourth proportional to 2,384.49, 3,290.58 and 1,390.35 is: 1,918.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,384.49 : 3,290.58 = 1,390.35 : x
  2. Step 2: Convert to fraction form
    2,384.49/3,290.58 = 1,390.35/x
  3. Step 3: Cross multiply
    2,384.49x = 3,290.58 × 1,390.35
  4. Step 4: Simplify right side
    2,384.49x = 4,575,057.90
  5. Step 5: Solve for x
    x = 4,575,057.90/2,384.49
  6. Step 6: Final answer
    x = 1,918.67

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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.