Home / 7,875.36-11,814.12-2,680.56

Finding the Fourth Proportional to 7,875.36, 11,814.12 and 2,680.56

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Solution

The fourth proportional to 7,875.36, 11,814.12 and 2,680.56 is: 4,021.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.36 : 11,814.12 = 2,680.56 : x
  2. Step 2: Convert to fraction form
    7,875.36/11,814.12 = 2,680.56/x
  3. Step 3: Cross multiply
    7,875.36x = 11,814.12 × 2,680.56
  4. Step 4: Simplify right side
    7,875.36x = 31,668,457.51
  5. Step 5: Solve for x
    x = 31,668,457.51/7,875.36
  6. Step 6: Final answer
    x = 4,021.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.