Home / 1,771.78-2,445.03-1,025.68

Finding the Fourth Proportional to 1,771.78, 2,445.03 and 1,025.68

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Solution

The fourth proportional to 1,771.78, 2,445.03 and 1,025.68 is: 1,415.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.78 : 2,445.03 = 1,025.68 : x
  2. Step 2: Convert to fraction form
    1,771.78/2,445.03 = 1,025.68/x
  3. Step 3: Cross multiply
    1,771.78x = 2,445.03 × 1,025.68
  4. Step 4: Simplify right side
    1,771.78x = 2,507,818.37
  5. Step 5: Solve for x
    x = 2,507,818.37/1,771.78
  6. Step 6: Final answer
    x = 1,415.42

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Double scale
Find fourth proportional to 1,772.78, 2,446.41 and 1,026.68
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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.