Home / 1,620.51-2,430.46-1,325.26

Finding the Fourth Proportional to 1,620.51, 2,430.46 and 1,325.26

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Solution

The fourth proportional to 1,620.51, 2,430.46 and 1,325.26 is: 1,987.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.51 : 2,430.46 = 1,325.26 : x
  2. Step 2: Convert to fraction form
    1,620.51/2,430.46 = 1,325.26/x
  3. Step 3: Cross multiply
    1,620.51x = 2,430.46 × 1,325.26
  4. Step 4: Simplify right side
    1,620.51x = 3,220,988.66
  5. Step 5: Solve for x
    x = 3,220,988.66/1,620.51
  6. Step 6: Final answer
    x = 1,987.64

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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.