Home / 3,128.18-4,316.74-1,802.06

Finding the Fourth Proportional to 3,128.18, 4,316.74 and 1,802.06

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Solution

The fourth proportional to 3,128.18, 4,316.74 and 1,802.06 is: 2,486.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.18 : 4,316.74 = 1,802.06 : x
  2. Step 2: Convert to fraction form
    3,128.18/4,316.74 = 1,802.06/x
  3. Step 3: Cross multiply
    3,128.18x = 4,316.74 × 1,802.06
  4. Step 4: Simplify right side
    3,128.18x = 7,779,024.48
  5. Step 5: Solve for x
    x = 7,779,024.48/3,128.18
  6. Step 6: Final answer
    x = 2,486.76

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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.