Home / 3,128.27-4,316.90-1,802.03

Finding the Fourth Proportional to 3,128.27, 4,316.90 and 1,802.03

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Solution

The fourth proportional to 3,128.27, 4,316.90 and 1,802.03 is: 2,486.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.27 : 4,316.90 = 1,802.03 : x
  2. Step 2: Convert to fraction form
    3,128.27/4,316.90 = 1,802.03/x
  3. Step 3: Cross multiply
    3,128.27x = 4,316.90 × 1,802.03
  4. Step 4: Simplify right side
    3,128.27x = 7,779,152.71
  5. Step 5: Solve for x
    x = 7,779,152.71/3,128.27
  6. Step 6: Final answer
    x = 2,486.73

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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.