Home / 7,189.60-10,784.40-4,271.20

Finding the Fourth Proportional to 7,189.60, 10,784.40 and 4,271.20

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Solution

The fourth proportional to 7,189.60, 10,784.40 and 4,271.20 is: 6,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.60 : 10,784.40 = 4,271.20 : x
  2. Step 2: Convert to fraction form
    7,189.60/10,784.40 = 4,271.20/x
  3. Step 3: Cross multiply
    7,189.60x = 10,784.40 × 4,271.20
  4. Step 4: Simplify right side
    7,189.60x = 46,062,329.28
  5. Step 5: Solve for x
    x = 46,062,329.28/7,189.60
  6. Step 6: Final answer
    x = 6,406.80

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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.