Home / 1,409.50-2,118.30-1,401.40

Finding the Fourth Proportional to 1,409.50, 2,118.30 and 1,401.40

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Solution

The fourth proportional to 1,409.50, 2,118.30 and 1,401.40 is: 2,106.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.50 : 2,118.30 = 1,401.40 : x
  2. Step 2: Convert to fraction form
    1,409.50/2,118.30 = 1,401.40/x
  3. Step 3: Cross multiply
    1,409.50x = 2,118.30 × 1,401.40
  4. Step 4: Simplify right side
    1,409.50x = 2,968,585.62
  5. Step 5: Solve for x
    x = 2,968,585.62/1,409.50
  6. Step 6: Final answer
    x = 2,106.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.