Home / 8,430.89-12,647.34-2,586.74

Finding the Fourth Proportional to 8,430.89, 12,647.34 and 2,586.74

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Solution

The fourth proportional to 8,430.89, 12,647.34 and 2,586.74 is: 3,880.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.89 : 12,647.34 = 2,586.74 : x
  2. Step 2: Convert to fraction form
    8,430.89/12,647.34 = 2,586.74/x
  3. Step 3: Cross multiply
    8,430.89x = 12,647.34 × 2,586.74
  4. Step 4: Simplify right side
    8,430.89x = 32,715,317.03
  5. Step 5: Solve for x
    x = 32,715,317.03/8,430.89
  6. Step 6: Final answer
    x = 3,880.41

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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.