Home / 8,421.18-12,615.60-4,712.17

Finding the Fourth Proportional to 8,421.18, 12,615.60 and 4,712.17

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Solution

The fourth proportional to 8,421.18, 12,615.60 and 4,712.17 is: 7,059.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.18 : 12,615.60 = 4,712.17 : x
  2. Step 2: Convert to fraction form
    8,421.18/12,615.60 = 4,712.17/x
  3. Step 3: Cross multiply
    8,421.18x = 12,615.60 × 4,712.17
  4. Step 4: Simplify right side
    8,421.18x = 59,446,851.85
  5. Step 5: Solve for x
    x = 59,446,851.85/8,421.18
  6. Step 6: Final answer
    x = 7,059.21

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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.