Home / 9,090.36-12,543.68-5,111.39

Finding the Fourth Proportional to 9,090.36, 12,543.68 and 5,111.39

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Solution

The fourth proportional to 9,090.36, 12,543.68 and 5,111.39 is: 7,053.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,090.36 : 12,543.68 = 5,111.39 : x
  2. Step 2: Convert to fraction form
    9,090.36/12,543.68 = 5,111.39/x
  3. Step 3: Cross multiply
    9,090.36x = 12,543.68 × 5,111.39
  4. Step 4: Simplify right side
    9,090.36x = 64,115,585.34
  5. Step 5: Solve for x
    x = 64,115,585.34/9,090.36
  6. Step 6: Final answer
    x = 7,053.14

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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.