Home / 3,130.26-4,316.40-2,638.32

Finding the Fourth Proportional to 3,130.26, 4,316.40 and 2,638.32

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Solution

The fourth proportional to 3,130.26, 4,316.40 and 2,638.32 is: 3,638.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.26 : 4,316.40 = 2,638.32 : x
  2. Step 2: Convert to fraction form
    3,130.26/4,316.40 = 2,638.32/x
  3. Step 3: Cross multiply
    3,130.26x = 4,316.40 × 2,638.32
  4. Step 4: Simplify right side
    3,130.26x = 11,388,044.45
  5. Step 5: Solve for x
    x = 11,388,044.45/3,130.26
  6. Step 6: Final answer
    x = 3,638.05

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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.