Home / 8,271.99-12,390.57-5,153.49

Finding the Fourth Proportional to 8,271.99, 12,390.57 and 5,153.49

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Solution

The fourth proportional to 8,271.99, 12,390.57 and 5,153.49 is: 7,719.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,271.99 : 12,390.57 = 5,153.49 : x
  2. Step 2: Convert to fraction form
    8,271.99/12,390.57 = 5,153.49/x
  3. Step 3: Cross multiply
    8,271.99x = 12,390.57 × 5,153.49
  4. Step 4: Simplify right side
    8,271.99x = 63,854,678.59
  5. Step 5: Solve for x
    x = 63,854,678.59/8,271.99
  6. Step 6: Final answer
    x = 7,719.39

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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.