Home / 1,345.73-2,021.43-1,309.28

Finding the Fourth Proportional to 1,345.73, 2,021.43 and 1,309.28

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Solution

The fourth proportional to 1,345.73, 2,021.43 and 1,309.28 is: 1,966.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.73 : 2,021.43 = 1,309.28 : x
  2. Step 2: Convert to fraction form
    1,345.73/2,021.43 = 1,309.28/x
  3. Step 3: Cross multiply
    1,345.73x = 2,021.43 × 1,309.28
  4. Step 4: Simplify right side
    1,345.73x = 2,646,617.87
  5. Step 5: Solve for x
    x = 2,646,617.87/1,345.73
  6. Step 6: Final answer
    x = 1,966.68

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1.5x scale

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.