Home / 1,385.37-1,911.60-795.79

Finding the Fourth Proportional to 1,385.37, 1,911.60 and 795.79

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Solution

The fourth proportional to 1,385.37, 1,911.60 and 795.79 is: 1,098.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.37 : 1,911.60 = 795.79 : x
  2. Step 2: Convert to fraction form
    1,385.37/1,911.60 = 795.79/x
  3. Step 3: Cross multiply
    1,385.37x = 1,911.60 × 795.79
  4. Step 4: Simplify right side
    1,385.37x = 1,521,232.16
  5. Step 5: Solve for x
    x = 1,521,232.16/1,385.37
  6. Step 6: Final answer
    x = 1,098.07

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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.