Home / 1,477.40-2,216.46-828.60

Finding the Fourth Proportional to 1,477.40, 2,216.46 and 828.60

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Solution

The fourth proportional to 1,477.40, 2,216.46 and 828.60 is: 1,243.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.40 : 2,216.46 = 828.60 : x
  2. Step 2: Convert to fraction form
    1,477.40/2,216.46 = 828.60/x
  3. Step 3: Cross multiply
    1,477.40x = 2,216.46 × 828.60
  4. Step 4: Simplify right side
    1,477.40x = 1,836,558.76
  5. Step 5: Solve for x
    x = 1,836,558.76/1,477.40
  6. Step 6: Final answer
    x = 1,243.10

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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.