Home / 4,920.89-6,790.86-2,931.53

Finding the Fourth Proportional to 4,920.89, 6,790.86 and 2,931.53

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Solution

The fourth proportional to 4,920.89, 6,790.86 and 2,931.53 is: 4,045.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.89 : 6,790.86 = 2,931.53 : x
  2. Step 2: Convert to fraction form
    4,920.89/6,790.86 = 2,931.53/x
  3. Step 3: Cross multiply
    4,920.89x = 6,790.86 × 2,931.53
  4. Step 4: Simplify right side
    4,920.89x = 19,907,609.82
  5. Step 5: Solve for x
    x = 19,907,609.82/4,920.89
  6. Step 6: Final answer
    x = 4,045.53

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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.