Home / 1,830.90-2,525.67-1,388.07

Finding the Fourth Proportional to 1,830.90, 2,525.67 and 1,388.07

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Solution

The fourth proportional to 1,830.90, 2,525.67 and 1,388.07 is: 1,914.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,830.90 : 2,525.67 = 1,388.07 : x
  2. Step 2: Convert to fraction form
    1,830.90/2,525.67 = 1,388.07/x
  3. Step 3: Cross multiply
    1,830.90x = 2,525.67 × 1,388.07
  4. Step 4: Simplify right side
    1,830.90x = 3,505,806.76
  5. Step 5: Solve for x
    x = 3,505,806.76/1,830.90
  6. Step 6: Final answer
    x = 1,914.80

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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.