Home / 1,621.70-2,430.46-1,412.62

Finding the Fourth Proportional to 1,621.70, 2,430.46 and 1,412.62

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Solution

The fourth proportional to 1,621.70, 2,430.46 and 1,412.62 is: 2,117.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.70 : 2,430.46 = 1,412.62 : x
  2. Step 2: Convert to fraction form
    1,621.70/2,430.46 = 1,412.62/x
  3. Step 3: Cross multiply
    1,621.70x = 2,430.46 × 1,412.62
  4. Step 4: Simplify right side
    1,621.70x = 3,433,316.41
  5. Step 5: Solve for x
    x = 3,433,316.41/1,621.70
  6. Step 6: Final answer
    x = 2,117.11

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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.