Home / 3,420.02-5,136.52-2,130.50

Finding the Fourth Proportional to 3,420.02, 5,136.52 and 2,130.50

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Solution

The fourth proportional to 3,420.02, 5,136.52 and 2,130.50 is: 3,199.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.02 : 5,136.52 = 2,130.50 : x
  2. Step 2: Convert to fraction form
    3,420.02/5,136.52 = 2,130.50/x
  3. Step 3: Cross multiply
    3,420.02x = 5,136.52 × 2,130.50
  4. Step 4: Simplify right side
    3,420.02x = 10,943,355.86
  5. Step 5: Solve for x
    x = 10,943,355.86/3,420.02
  6. Step 6: Final answer
    x = 3,199.79

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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.