Home / 4,911-6,775.74-2,920.56

Finding the Fourth Proportional to 4,911, 6,775.74 and 2,920.56

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Solution

The fourth proportional to 4,911, 6,775.74 and 2,920.56 is: 4,029.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911 : 6,775.74 = 2,920.56 : x
  2. Step 2: Convert to fraction form
    4,911/6,775.74 = 2,920.56/x
  3. Step 3: Cross multiply
    4,911x = 6,775.74 × 2,920.56
  4. Step 4: Simplify right side
    4,911x = 19,788,955.21
  5. Step 5: Solve for x
    x = 19,788,955.21/4,911
  6. Step 6: Final answer
    x = 4,029.52

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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.