Home / 5,421.02-8,130.80-1,472.58

Finding the Fourth Proportional to 5,421.02, 8,130.80 and 1,472.58

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Solution

The fourth proportional to 5,421.02, 8,130.80 and 1,472.58 is: 2,208.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.02 : 8,130.80 = 1,472.58 : x
  2. Step 2: Convert to fraction form
    5,421.02/8,130.80 = 1,472.58/x
  3. Step 3: Cross multiply
    5,421.02x = 8,130.80 × 1,472.58
  4. Step 4: Simplify right side
    5,421.02x = 11,973,257.15
  5. Step 5: Solve for x
    x = 11,973,257.15/5,421.02
  6. Step 6: Final answer
    x = 2,208.67

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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.