Home / 7,077.15-10,615.70-1,812.15

Finding the Fourth Proportional to 7,077.15, 10,615.70 and 1,812.15

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Solution

The fourth proportional to 7,077.15, 10,615.70 and 1,812.15 is: 2,718.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,077.15 : 10,615.70 = 1,812.15 : x
  2. Step 2: Convert to fraction form
    7,077.15/10,615.70 = 1,812.15/x
  3. Step 3: Cross multiply
    7,077.15x = 10,615.70 × 1,812.15
  4. Step 4: Simplify right side
    7,077.15x = 19,237,231.69
  5. Step 5: Solve for x
    x = 19,237,231.69/7,077.15
  6. Step 6: Final answer
    x = 2,718.22

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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.