Home / 7,113.90-10,669.64-1,918.56

Finding the Fourth Proportional to 7,113.90, 10,669.64 and 1,918.56

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Solution

The fourth proportional to 7,113.90, 10,669.64 and 1,918.56 is: 2,877.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.90 : 10,669.64 = 1,918.56 : x
  2. Step 2: Convert to fraction form
    7,113.90/10,669.64 = 1,918.56/x
  3. Step 3: Cross multiply
    7,113.90x = 10,669.64 × 1,918.56
  4. Step 4: Simplify right side
    7,113.90x = 20,470,344.52
  5. Step 5: Solve for x
    x = 20,470,344.52/7,113.90
  6. Step 6: Final answer
    x = 2,877.51

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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.