Home / 1,621.81-2,430.45-1,226.16

Finding the Fourth Proportional to 1,621.81, 2,430.45 and 1,226.16

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Solution

The fourth proportional to 1,621.81, 2,430.45 and 1,226.16 is: 1,837.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.81 : 2,430.45 = 1,226.16 : x
  2. Step 2: Convert to fraction form
    1,621.81/2,430.45 = 1,226.16/x
  3. Step 3: Cross multiply
    1,621.81x = 2,430.45 × 1,226.16
  4. Step 4: Simplify right side
    1,621.81x = 2,980,134.28
  5. Step 5: Solve for x
    x = 2,980,134.28/1,621.81
  6. Step 6: Final answer
    x = 1,837.53

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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.