Home / 4,877.79-6,731.35-2,639.67

Finding the Fourth Proportional to 4,877.79, 6,731.35 and 2,639.67

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Solution

The fourth proportional to 4,877.79, 6,731.35 and 2,639.67 is: 3,642.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,877.79 : 6,731.35 = 2,639.67 : x
  2. Step 2: Convert to fraction form
    4,877.79/6,731.35 = 2,639.67/x
  3. Step 3: Cross multiply
    4,877.79x = 6,731.35 × 2,639.67
  4. Step 4: Simplify right side
    4,877.79x = 17,768,527.40
  5. Step 5: Solve for x
    x = 17,768,527.40/4,877.79
  6. Step 6: Final answer
    x = 3,642.74

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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.