Home / 3,645.19-5,030.67-2,980.18

Finding the Fourth Proportional to 3,645.19, 5,030.67 and 2,980.18

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Solution

The fourth proportional to 3,645.19, 5,030.67 and 2,980.18 is: 4,112.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,645.19 : 5,030.67 = 2,980.18 : x
  2. Step 2: Convert to fraction form
    3,645.19/5,030.67 = 2,980.18/x
  3. Step 3: Cross multiply
    3,645.19x = 5,030.67 × 2,980.18
  4. Step 4: Simplify right side
    3,645.19x = 14,992,302.12
  5. Step 5: Solve for x
    x = 14,992,302.12/3,645.19
  6. Step 6: Final answer
    x = 4,112.90

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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.