Home / 3,980.21-5,970.32-1,514.45

Finding the Fourth Proportional to 3,980.21, 5,970.32 and 1,514.45

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Solution

The fourth proportional to 3,980.21, 5,970.32 and 1,514.45 is: 2,271.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.21 : 5,970.32 = 1,514.45 : x
  2. Step 2: Convert to fraction form
    3,980.21/5,970.32 = 1,514.45/x
  3. Step 3: Cross multiply
    3,980.21x = 5,970.32 × 1,514.45
  4. Step 4: Simplify right side
    3,980.21x = 9,041,751.12
  5. Step 5: Solve for x
    x = 9,041,751.12/3,980.21
  6. Step 6: Final answer
    x = 2,271.68

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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.