Home / 7,312.21-10,090.81-3,955.02

Finding the Fourth Proportional to 7,312.21, 10,090.81 and 3,955.02

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Solution

The fourth proportional to 7,312.21, 10,090.81 and 3,955.02 is: 5,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,312.21 : 10,090.81 = 3,955.02 : x
  2. Step 2: Convert to fraction form
    7,312.21/10,090.81 = 3,955.02/x
  3. Step 3: Cross multiply
    7,312.21x = 10,090.81 × 3,955.02
  4. Step 4: Simplify right side
    7,312.21x = 39,909,285.14
  5. Step 5: Solve for x
    x = 39,909,285.14/7,312.21
  6. Step 6: Final answer
    x = 5,457.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.