Home / 3,130.88-4,320.25-1,804.58

Finding the Fourth Proportional to 3,130.88, 4,320.25 and 1,804.58

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Solution

The fourth proportional to 3,130.88, 4,320.25 and 1,804.58 is: 2,490.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.88 : 4,320.25 = 1,804.58 : x
  2. Step 2: Convert to fraction form
    3,130.88/4,320.25 = 1,804.58/x
  3. Step 3: Cross multiply
    3,130.88x = 4,320.25 × 1,804.58
  4. Step 4: Simplify right side
    3,130.88x = 7,796,215.14
  5. Step 5: Solve for x
    x = 7,796,215.14/3,130.88
  6. Step 6: Final answer
    x = 2,490.10

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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.