Home / 3,080.51-4,620.80-1,325.40

Finding the Fourth Proportional to 3,080.51, 4,620.80 and 1,325.40

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Solution

The fourth proportional to 3,080.51, 4,620.80 and 1,325.40 is: 1,988.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.51 : 4,620.80 = 1,325.40 : x
  2. Step 2: Convert to fraction form
    3,080.51/4,620.80 = 1,325.40/x
  3. Step 3: Cross multiply
    3,080.51x = 4,620.80 × 1,325.40
  4. Step 4: Simplify right side
    3,080.51x = 6,124,408.32
  5. Step 5: Solve for x
    x = 6,124,408.32/3,080.51
  6. Step 6: Final answer
    x = 1,988.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.