Home / 3,390.39-4,678.70-1,898.24

Finding the Fourth Proportional to 3,390.39, 4,678.70 and 1,898.24

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Solution

The fourth proportional to 3,390.39, 4,678.70 and 1,898.24 is: 2,619.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.39 : 4,678.70 = 1,898.24 : x
  2. Step 2: Convert to fraction form
    3,390.39/4,678.70 = 1,898.24/x
  3. Step 3: Cross multiply
    3,390.39x = 4,678.70 × 1,898.24
  4. Step 4: Simplify right side
    3,390.39x = 8,881,262.60
  5. Step 5: Solve for x
    x = 8,881,262.60/3,390.39
  6. Step 6: Final answer
    x = 2,619.54

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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.