Home / 3,128.51-4,317.20-1,801.93

Finding the Fourth Proportional to 3,128.51, 4,317.20 and 1,801.93

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Solution

The fourth proportional to 3,128.51, 4,317.20 and 1,801.93 is: 2,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.51 : 4,317.20 = 1,801.93 : x
  2. Step 2: Convert to fraction form
    3,128.51/4,317.20 = 1,801.93/x
  3. Step 3: Cross multiply
    3,128.51x = 4,317.20 × 1,801.93
  4. Step 4: Simplify right side
    3,128.51x = 7,779,292.20
  5. Step 5: Solve for x
    x = 7,779,292.20/3,128.51
  6. Step 6: Final answer
    x = 2,486.58

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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.