Home / 1,858.40-2,783.55-1,653.20

Finding the Fourth Proportional to 1,858.40, 2,783.55 and 1,653.20

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Solution

The fourth proportional to 1,858.40, 2,783.55 and 1,653.20 is: 2,476.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.40 : 2,783.55 = 1,653.20 : x
  2. Step 2: Convert to fraction form
    1,858.40/2,783.55 = 1,653.20/x
  3. Step 3: Cross multiply
    1,858.40x = 2,783.55 × 1,653.20
  4. Step 4: Simplify right side
    1,858.40x = 4,601,764.86
  5. Step 5: Solve for x
    x = 4,601,764.86/1,858.40
  6. Step 6: Final answer
    x = 2,476.20

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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.