Home / 1,362.12-1,879.89-1,325.07

Finding the Fourth Proportional to 1,362.12, 1,879.89 and 1,325.07

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Solution

The fourth proportional to 1,362.12, 1,879.89 and 1,325.07 is: 1,828.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.12 : 1,879.89 = 1,325.07 : x
  2. Step 2: Convert to fraction form
    1,362.12/1,879.89 = 1,325.07/x
  3. Step 3: Cross multiply
    1,362.12x = 1,879.89 × 1,325.07
  4. Step 4: Simplify right side
    1,362.12x = 2,490,985.84
  5. Step 5: Solve for x
    x = 2,490,985.84/1,362.12
  6. Step 6: Final answer
    x = 1,828.76

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1.5x scale

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.