Home / 8,677.51-11,970.56-5,090.12

Finding the Fourth Proportional to 8,677.51, 11,970.56 and 5,090.12

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Solution

The fourth proportional to 8,677.51, 11,970.56 and 5,090.12 is: 7,021.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,677.51 : 11,970.56 = 5,090.12 : x
  2. Step 2: Convert to fraction form
    8,677.51/11,970.56 = 5,090.12/x
  3. Step 3: Cross multiply
    8,677.51x = 11,970.56 × 5,090.12
  4. Step 4: Simplify right side
    8,677.51x = 60,931,637.65
  5. Step 5: Solve for x
    x = 60,931,637.65/8,677.51
  6. Step 6: Final answer
    x = 7,021.79

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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.