Home / 8,457.40-12,683.30-2,909.80

Finding the Fourth Proportional to 8,457.40, 12,683.30 and 2,909.80

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Solution

The fourth proportional to 8,457.40, 12,683.30 and 2,909.80 is: 4,363.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.40 : 12,683.30 = 2,909.80 : x
  2. Step 2: Convert to fraction form
    8,457.40/12,683.30 = 2,909.80/x
  3. Step 3: Cross multiply
    8,457.40x = 12,683.30 × 2,909.80
  4. Step 4: Simplify right side
    8,457.40x = 36,905,866.34
  5. Step 5: Solve for x
    x = 36,905,866.34/8,457.40
  6. Step 6: Final answer
    x = 4,363.74

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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.