Home / 6,513.05-8,988.90-3,994.71

Finding the Fourth Proportional to 6,513.05, 8,988.90 and 3,994.71

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Solution

The fourth proportional to 6,513.05, 8,988.90 and 3,994.71 is: 5,513.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,513.05 : 8,988.90 = 3,994.71 : x
  2. Step 2: Convert to fraction form
    6,513.05/8,988.90 = 3,994.71/x
  3. Step 3: Cross multiply
    6,513.05x = 8,988.90 × 3,994.71
  4. Step 4: Simplify right side
    6,513.05x = 35,908,048.72
  5. Step 5: Solve for x
    x = 35,908,048.72/6,513.05
  6. Step 6: Final answer
    x = 5,513.25

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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.