Home / 1,226.08-1,690.36-1,015.48

Finding the Fourth Proportional to 1,226.08, 1,690.36 and 1,015.48

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Solution

The fourth proportional to 1,226.08, 1,690.36 and 1,015.48 is: 1,400.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.08 : 1,690.36 = 1,015.48 : x
  2. Step 2: Convert to fraction form
    1,226.08/1,690.36 = 1,015.48/x
  3. Step 3: Cross multiply
    1,226.08x = 1,690.36 × 1,015.48
  4. Step 4: Simplify right side
    1,226.08x = 1,716,526.77
  5. Step 5: Solve for x
    x = 1,716,526.77/1,226.08
  6. Step 6: Final answer
    x = 1,400.01

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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.