Home / 3,987.63-5,501.93-2,415.42

Finding the Fourth Proportional to 3,987.63, 5,501.93 and 2,415.42

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Solution

The fourth proportional to 3,987.63, 5,501.93 and 2,415.42 is: 3,332.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.63 : 5,501.93 = 2,415.42 : x
  2. Step 2: Convert to fraction form
    3,987.63/5,501.93 = 2,415.42/x
  3. Step 3: Cross multiply
    3,987.63x = 5,501.93 × 2,415.42
  4. Step 4: Simplify right side
    3,987.63x = 13,289,459.68
  5. Step 5: Solve for x
    x = 13,289,459.68/3,987.63
  6. Step 6: Final answer
    x = 3,332.67

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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.