Home / 1,890.45-2,608.90-1,051.15

Finding the Fourth Proportional to 1,890.45, 2,608.90 and 1,051.15

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Solution

The fourth proportional to 1,890.45, 2,608.90 and 1,051.15 is: 1,450.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.45 : 2,608.90 = 1,051.15 : x
  2. Step 2: Convert to fraction form
    1,890.45/2,608.90 = 1,051.15/x
  3. Step 3: Cross multiply
    1,890.45x = 2,608.90 × 1,051.15
  4. Step 4: Simplify right side
    1,890.45x = 2,742,345.24
  5. Step 5: Solve for x
    x = 2,742,345.24/1,890.45
  6. Step 6: Final answer
    x = 1,450.63

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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.