Home / 7,131.58-10,700.08-2,970.45

Finding the Fourth Proportional to 7,131.58, 10,700.08 and 2,970.45

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Solution

The fourth proportional to 7,131.58, 10,700.08 and 2,970.45 is: 4,456.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.58 : 10,700.08 = 2,970.45 : x
  2. Step 2: Convert to fraction form
    7,131.58/10,700.08 = 2,970.45/x
  3. Step 3: Cross multiply
    7,131.58x = 10,700.08 × 2,970.45
  4. Step 4: Simplify right side
    7,131.58x = 31,784,045.21
  5. Step 5: Solve for x
    x = 31,784,045.21/7,131.58
  6. Step 6: Final answer
    x = 4,456.80

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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.