Home / 4,921.42-6,790.77-2,931.91

Finding the Fourth Proportional to 4,921.42, 6,790.77 and 2,931.91

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Solution

The fourth proportional to 4,921.42, 6,790.77 and 2,931.91 is: 4,045.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.42 : 6,790.77 = 2,931.91 : x
  2. Step 2: Convert to fraction form
    4,921.42/6,790.77 = 2,931.91/x
  3. Step 3: Cross multiply
    4,921.42x = 6,790.77 × 2,931.91
  4. Step 4: Simplify right side
    4,921.42x = 19,909,926.47
  5. Step 5: Solve for x
    x = 19,909,926.47/4,921.42
  6. Step 6: Final answer
    x = 4,045.57

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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.