Home / 1,905.48-2,858.58-606.78

Finding the Fourth Proportional to 1,905.48, 2,858.58 and 606.78

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Solution

The fourth proportional to 1,905.48, 2,858.58 and 606.78 is: 910.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.48 : 2,858.58 = 606.78 : x
  2. Step 2: Convert to fraction form
    1,905.48/2,858.58 = 606.78/x
  3. Step 3: Cross multiply
    1,905.48x = 2,858.58 × 606.78
  4. Step 4: Simplify right side
    1,905.48x = 1,734,529.17
  5. Step 5: Solve for x
    x = 1,734,529.17/1,905.48
  6. Step 6: Final answer
    x = 910.28

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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.