Home / 1,513.22-2,090.81-1,316.39

Finding the Fourth Proportional to 1,513.22, 2,090.81 and 1,316.39

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Solution

The fourth proportional to 1,513.22, 2,090.81 and 1,316.39 is: 1,818.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.22 : 2,090.81 = 1,316.39 : x
  2. Step 2: Convert to fraction form
    1,513.22/2,090.81 = 1,316.39/x
  3. Step 3: Cross multiply
    1,513.22x = 2,090.81 × 1,316.39
  4. Step 4: Simplify right side
    1,513.22x = 2,752,314.21
  5. Step 5: Solve for x
    x = 2,752,314.21/1,513.22
  6. Step 6: Final answer
    x = 1,818.85

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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.