Home / 2,980.55-4,457.70-2,653.80

Finding the Fourth Proportional to 2,980.55, 4,457.70 and 2,653.80

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Solution

The fourth proportional to 2,980.55, 4,457.70 and 2,653.80 is: 3,969.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.55 : 4,457.70 = 2,653.80 : x
  2. Step 2: Convert to fraction form
    2,980.55/4,457.70 = 2,653.80/x
  3. Step 3: Cross multiply
    2,980.55x = 4,457.70 × 2,653.80
  4. Step 4: Simplify right side
    2,980.55x = 11,829,844.26
  5. Step 5: Solve for x
    x = 11,829,844.26/2,980.55
  6. Step 6: Final answer
    x = 3,969.01

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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.