Home / 1,720.67-2,374.64-974.81

Finding the Fourth Proportional to 1,720.67, 2,374.64 and 974.81

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Solution

The fourth proportional to 1,720.67, 2,374.64 and 974.81 is: 1,345.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.67 : 2,374.64 = 974.81 : x
  2. Step 2: Convert to fraction form
    1,720.67/2,374.64 = 974.81/x
  3. Step 3: Cross multiply
    1,720.67x = 2,374.64 × 974.81
  4. Step 4: Simplify right side
    1,720.67x = 2,314,823.60
  5. Step 5: Solve for x
    x = 2,314,823.60/1,720.67
  6. Step 6: Final answer
    x = 1,345.31

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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.