Home / 1,260.07-1,890.27-438.58

Finding the Fourth Proportional to 1,260.07, 1,890.27 and 438.58

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Solution

The fourth proportional to 1,260.07, 1,890.27 and 438.58 is: 657.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.07 : 1,890.27 = 438.58 : x
  2. Step 2: Convert to fraction form
    1,260.07/1,890.27 = 438.58/x
  3. Step 3: Cross multiply
    1,260.07x = 1,890.27 × 438.58
  4. Step 4: Simplify right side
    1,260.07x = 829,034.62
  5. Step 5: Solve for x
    x = 829,034.62/1,260.07
  6. Step 6: Final answer
    x = 657.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.