Home / 1,345.24-2,018.04-1,321.12

Finding the Fourth Proportional to 1,345.24, 2,018.04 and 1,321.12

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Solution

The fourth proportional to 1,345.24, 2,018.04 and 1,321.12 is: 1,981.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.24 : 2,018.04 = 1,321.12 : x
  2. Step 2: Convert to fraction form
    1,345.24/2,018.04 = 1,321.12/x
  3. Step 3: Cross multiply
    1,345.24x = 2,018.04 × 1,321.12
  4. Step 4: Simplify right side
    1,345.24x = 2,666,073.00
  5. Step 5: Solve for x
    x = 2,666,073.00/1,345.24
  6. Step 6: Final answer
    x = 1,981.86

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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.