Home / 3,615.53-5,430.58-2,157.53

Finding the Fourth Proportional to 3,615.53, 5,430.58 and 2,157.53

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Solution

The fourth proportional to 3,615.53, 5,430.58 and 2,157.53 is: 3,240.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.53 : 5,430.58 = 2,157.53 : x
  2. Step 2: Convert to fraction form
    3,615.53/5,430.58 = 2,157.53/x
  3. Step 3: Cross multiply
    3,615.53x = 5,430.58 × 2,157.53
  4. Step 4: Simplify right side
    3,615.53x = 11,716,639.27
  5. Step 5: Solve for x
    x = 11,716,639.27/3,615.53
  6. Step 6: Final answer
    x = 3,240.64

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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.