Home / 3,111.04-4,666.60-919.60

Finding the Fourth Proportional to 3,111.04, 4,666.60 and 919.60

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Solution

The fourth proportional to 3,111.04, 4,666.60 and 919.60 is: 1,379.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.04 : 4,666.60 = 919.60 : x
  2. Step 2: Convert to fraction form
    3,111.04/4,666.60 = 919.60/x
  3. Step 3: Cross multiply
    3,111.04x = 4,666.60 × 919.60
  4. Step 4: Simplify right side
    3,111.04x = 4,291,405.36
  5. Step 5: Solve for x
    x = 4,291,405.36/3,111.04
  6. Step 6: Final answer
    x = 1,379.41

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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.