Home / 7,817.21-10,788.09-4,830.74

Finding the Fourth Proportional to 7,817.21, 10,788.09 and 4,830.74

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Solution

The fourth proportional to 7,817.21, 10,788.09 and 4,830.74 is: 6,666.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.21 : 10,788.09 = 4,830.74 : x
  2. Step 2: Convert to fraction form
    7,817.21/10,788.09 = 4,830.74/x
  3. Step 3: Cross multiply
    7,817.21x = 10,788.09 × 4,830.74
  4. Step 4: Simplify right side
    7,817.21x = 52,114,457.89
  5. Step 5: Solve for x
    x = 52,114,457.89/7,817.21
  6. Step 6: Final answer
    x = 6,666.63

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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.