Home / 5,130.72-7,698.10-2,667.08

Finding the Fourth Proportional to 5,130.72, 7,698.10 and 2,667.08

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Solution

The fourth proportional to 5,130.72, 7,698.10 and 2,667.08 is: 4,001.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.72 : 7,698.10 = 2,667.08 : x
  2. Step 2: Convert to fraction form
    5,130.72/7,698.10 = 2,667.08/x
  3. Step 3: Cross multiply
    5,130.72x = 7,698.10 × 2,667.08
  4. Step 4: Simplify right side
    5,130.72x = 20,531,448.55
  5. Step 5: Solve for x
    x = 20,531,448.55/5,130.72
  6. Step 6: Final answer
    x = 4,001.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.