Home / 5,485.36-8,185.86-4,902.16

Finding the Fourth Proportional to 5,485.36, 8,185.86 and 4,902.16

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Solution

The fourth proportional to 5,485.36, 8,185.86 and 4,902.16 is: 7,315.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.36 : 8,185.86 = 4,902.16 : x
  2. Step 2: Convert to fraction form
    5,485.36/8,185.86 = 4,902.16/x
  3. Step 3: Cross multiply
    5,485.36x = 8,185.86 × 4,902.16
  4. Step 4: Simplify right side
    5,485.36x = 40,128,395.46
  5. Step 5: Solve for x
    x = 40,128,395.46/5,485.36
  6. Step 6: Final answer
    x = 7,315.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.