Home / 1,910.07-2,633.38-1,378.51

Finding the Fourth Proportional to 1,910.07, 2,633.38 and 1,378.51

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Solution

The fourth proportional to 1,910.07, 2,633.38 and 1,378.51 is: 1,900.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.07 : 2,633.38 = 1,378.51 : x
  2. Step 2: Convert to fraction form
    1,910.07/2,633.38 = 1,378.51/x
  3. Step 3: Cross multiply
    1,910.07x = 2,633.38 × 1,378.51
  4. Step 4: Simplify right side
    1,910.07x = 3,630,130.63
  5. Step 5: Solve for x
    x = 3,630,130.63/1,910.07
  6. Step 6: Final answer
    x = 1,900.52

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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.