Home / 2,880.36-4,316.34-1,420.56

Finding the Fourth Proportional to 2,880.36, 4,316.34 and 1,420.56

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Solution

The fourth proportional to 2,880.36, 4,316.34 and 1,420.56 is: 2,128.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.36 : 4,316.34 = 1,420.56 : x
  2. Step 2: Convert to fraction form
    2,880.36/4,316.34 = 1,420.56/x
  3. Step 3: Cross multiply
    2,880.36x = 4,316.34 × 1,420.56
  4. Step 4: Simplify right side
    2,880.36x = 6,131,619.95
  5. Step 5: Solve for x
    x = 6,131,619.95/2,880.36
  6. Step 6: Final answer
    x = 2,128.77

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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.