Home / 3,120.59-4,678.72-1,558.37

Finding the Fourth Proportional to 3,120.59, 4,678.72 and 1,558.37

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Solution

The fourth proportional to 3,120.59, 4,678.72 and 1,558.37 is: 2,336.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.59 : 4,678.72 = 1,558.37 : x
  2. Step 2: Convert to fraction form
    3,120.59/4,678.72 = 1,558.37/x
  3. Step 3: Cross multiply
    3,120.59x = 4,678.72 × 1,558.37
  4. Step 4: Simplify right side
    3,120.59x = 7,291,176.89
  5. Step 5: Solve for x
    x = 7,291,176.89/3,120.59
  6. Step 6: Final answer
    x = 2,336.47

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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.