Home / 3,130.42-4,319.36-1,786.00

Finding the Fourth Proportional to 3,130.42, 4,319.36 and 1,786.00

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Solution

The fourth proportional to 3,130.42, 4,319.36 and 1,786.00 is: 2,464.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.42 : 4,319.36 = 1,786.00 : x
  2. Step 2: Convert to fraction form
    3,130.42/4,319.36 = 1,786.00/x
  3. Step 3: Cross multiply
    3,130.42x = 4,319.36 × 1,786.00
  4. Step 4: Simplify right side
    3,130.42x = 7,714,346.43
  5. Step 5: Solve for x
    x = 7,714,346.43/3,130.42
  6. Step 6: Final answer
    x = 2,464.32

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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.