Home / 8,400.28-12,588.02-7,477.60

Finding the Fourth Proportional to 8,400.28, 12,588.02 and 7,477.60

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Solution

The fourth proportional to 8,400.28, 12,588.02 and 7,477.60 is: 11,205.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400.28 : 12,588.02 = 7,477.60 : x
  2. Step 2: Convert to fraction form
    8,400.28/12,588.02 = 7,477.60/x
  3. Step 3: Cross multiply
    8,400.28x = 12,588.02 × 7,477.60
  4. Step 4: Simplify right side
    8,400.28x = 94,128,178.35
  5. Step 5: Solve for x
    x = 94,128,178.35/8,400.28
  6. Step 6: Final answer
    x = 11,205.36

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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.