Home / 3,110.64-4,666.59-919.32

Finding the Fourth Proportional to 3,110.64, 4,666.59 and 919.32

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Solution

The fourth proportional to 3,110.64, 4,666.59 and 919.32 is: 1,379.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.64 : 4,666.59 = 919.32 : x
  2. Step 2: Convert to fraction form
    3,110.64/4,666.59 = 919.32/x
  3. Step 3: Cross multiply
    3,110.64x = 4,666.59 × 919.32
  4. Step 4: Simplify right side
    3,110.64x = 4,290,089.52
  5. Step 5: Solve for x
    x = 4,290,089.52/3,110.64
  6. Step 6: Final answer
    x = 1,379.17

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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.