Home / 2,114.81-2,918.62-1,230.90

Finding the Fourth Proportional to 2,114.81, 2,918.62 and 1,230.90

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Solution

The fourth proportional to 2,114.81, 2,918.62 and 1,230.90 is: 1,698.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.81 : 2,918.62 = 1,230.90 : x
  2. Step 2: Convert to fraction form
    2,114.81/2,918.62 = 1,230.90/x
  3. Step 3: Cross multiply
    2,114.81x = 2,918.62 × 1,230.90
  4. Step 4: Simplify right side
    2,114.81x = 3,592,529.36
  5. Step 5: Solve for x
    x = 3,592,529.36/2,114.81
  6. Step 6: Final answer
    x = 1,698.75

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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.