Home / 1,783.39-2,457.75-1,285.15

Finding the Fourth Proportional to 1,783.39, 2,457.75 and 1,285.15

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Solution

The fourth proportional to 1,783.39, 2,457.75 and 1,285.15 is: 1,771.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.39 : 2,457.75 = 1,285.15 : x
  2. Step 2: Convert to fraction form
    1,783.39/2,457.75 = 1,285.15/x
  3. Step 3: Cross multiply
    1,783.39x = 2,457.75 × 1,285.15
  4. Step 4: Simplify right side
    1,783.39x = 3,158,577.41
  5. Step 5: Solve for x
    x = 3,158,577.41/1,783.39
  6. Step 6: Final answer
    x = 1,771.11

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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.