Home / 5,289.12-7,299.21-2,931.25

Finding the Fourth Proportional to 5,289.12, 7,299.21 and 2,931.25

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Solution

The fourth proportional to 5,289.12, 7,299.21 and 2,931.25 is: 4,045.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289.12 : 7,299.21 = 2,931.25 : x
  2. Step 2: Convert to fraction form
    5,289.12/7,299.21 = 2,931.25/x
  3. Step 3: Cross multiply
    5,289.12x = 7,299.21 × 2,931.25
  4. Step 4: Simplify right side
    5,289.12x = 21,395,809.31
  5. Step 5: Solve for x
    x = 21,395,809.31/5,289.12
  6. Step 6: Final answer
    x = 4,045.25

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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.