Home / 3,130.07-4,320.56-1,804.30

Finding the Fourth Proportional to 3,130.07, 4,320.56 and 1,804.30

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Solution

The fourth proportional to 3,130.07, 4,320.56 and 1,804.30 is: 2,490.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.07 : 4,320.56 = 1,804.30 : x
  2. Step 2: Convert to fraction form
    3,130.07/4,320.56 = 1,804.30/x
  3. Step 3: Cross multiply
    3,130.07x = 4,320.56 × 1,804.30
  4. Step 4: Simplify right side
    3,130.07x = 7,795,580.12
  5. Step 5: Solve for x
    x = 7,795,580.12/3,130.07
  6. Step 6: Final answer
    x = 2,490.55

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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.