Home / 3,077.99-4,247.67-1,680.74

Finding the Fourth Proportional to 3,077.99, 4,247.67 and 1,680.74

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Solution

The fourth proportional to 3,077.99, 4,247.67 and 1,680.74 is: 2,319.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.99 : 4,247.67 = 1,680.74 : x
  2. Step 2: Convert to fraction form
    3,077.99/4,247.67 = 1,680.74/x
  3. Step 3: Cross multiply
    3,077.99x = 4,247.67 × 1,680.74
  4. Step 4: Simplify right side
    3,077.99x = 7,139,199.23
  5. Step 5: Solve for x
    x = 7,139,199.23/3,077.99
  6. Step 6: Final answer
    x = 2,319.44

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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.