Home / 3,130.07-4,319.12-1,803.83

Finding the Fourth Proportional to 3,130.07, 4,319.12 and 1,803.83

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Solution

The fourth proportional to 3,130.07, 4,319.12 and 1,803.83 is: 2,489.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.07 : 4,319.12 = 1,803.83 : x
  2. Step 2: Convert to fraction form
    3,130.07/4,319.12 = 1,803.83/x
  3. Step 3: Cross multiply
    3,130.07x = 4,319.12 × 1,803.83
  4. Step 4: Simplify right side
    3,130.07x = 7,790,941.14
  5. Step 5: Solve for x
    x = 7,790,941.14/3,130.07
  6. Step 6: Final answer
    x = 2,489.07

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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.