Home / 2,931.08-4,393.95-1,080.90

Finding the Fourth Proportional to 2,931.08, 4,393.95 and 1,080.90

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Solution

The fourth proportional to 2,931.08, 4,393.95 and 1,080.90 is: 1,620.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.08 : 4,393.95 = 1,080.90 : x
  2. Step 2: Convert to fraction form
    2,931.08/4,393.95 = 1,080.90/x
  3. Step 3: Cross multiply
    2,931.08x = 4,393.95 × 1,080.90
  4. Step 4: Simplify right side
    2,931.08x = 4,749,416.50
  5. Step 5: Solve for x
    x = 4,749,416.50/2,931.08
  6. Step 6: Final answer
    x = 1,620.37

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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.