Home / 1,477.60-2,216.80-1,316.40

Finding the Fourth Proportional to 1,477.60, 2,216.80 and 1,316.40

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Solution

The fourth proportional to 1,477.60, 2,216.80 and 1,316.40 is: 1,974.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.60 : 2,216.80 = 1,316.40 : x
  2. Step 2: Convert to fraction form
    1,477.60/2,216.80 = 1,316.40/x
  3. Step 3: Cross multiply
    1,477.60x = 2,216.80 × 1,316.40
  4. Step 4: Simplify right side
    1,477.60x = 2,918,195.52
  5. Step 5: Solve for x
    x = 2,918,195.52/1,477.60
  6. Step 6: Final answer
    x = 1,974.96

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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.