Home / 5,426.40-8,139.60-5,368.80

Finding the Fourth Proportional to 5,426.40, 8,139.60 and 5,368.80

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Solution

The fourth proportional to 5,426.40, 8,139.60 and 5,368.80 is: 8,053.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.40 : 8,139.60 = 5,368.80 : x
  2. Step 2: Convert to fraction form
    5,426.40/8,139.60 = 5,368.80/x
  3. Step 3: Cross multiply
    5,426.40x = 8,139.60 × 5,368.80
  4. Step 4: Simplify right side
    5,426.40x = 43,699,884.48
  5. Step 5: Solve for x
    x = 43,699,884.48/5,426.40
  6. Step 6: Final answer
    x = 8,053.20

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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.