Home / 1,783.08-2,460.90-1,287.32

Finding the Fourth Proportional to 1,783.08, 2,460.90 and 1,287.32

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Solution

The fourth proportional to 1,783.08, 2,460.90 and 1,287.32 is: 1,776.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.08 : 2,460.90 = 1,287.32 : x
  2. Step 2: Convert to fraction form
    1,783.08/2,460.90 = 1,287.32/x
  3. Step 3: Cross multiply
    1,783.08x = 2,460.90 × 1,287.32
  4. Step 4: Simplify right side
    1,783.08x = 3,167,965.79
  5. Step 5: Solve for x
    x = 3,167,965.79/1,783.08
  6. Step 6: Final answer
    x = 1,776.68

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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.