Home / 3,100.08-4,629.60-2,931.60

Finding the Fourth Proportional to 3,100.08, 4,629.60 and 2,931.60

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Solution

The fourth proportional to 3,100.08, 4,629.60 and 2,931.60 is: 4,378.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.08 : 4,629.60 = 2,931.60 : x
  2. Step 2: Convert to fraction form
    3,100.08/4,629.60 = 2,931.60/x
  3. Step 3: Cross multiply
    3,100.08x = 4,629.60 × 2,931.60
  4. Step 4: Simplify right side
    3,100.08x = 13,572,135.36
  5. Step 5: Solve for x
    x = 13,572,135.36/3,100.08
  6. Step 6: Final answer
    x = 4,378.00

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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.