Home / 2,289.25-3,430.63-1,118.40

Finding the Fourth Proportional to 2,289.25, 3,430.63 and 1,118.40

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Solution

The fourth proportional to 2,289.25, 3,430.63 and 1,118.40 is: 1,676.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.25 : 3,430.63 = 1,118.40 : x
  2. Step 2: Convert to fraction form
    2,289.25/3,430.63 = 1,118.40/x
  3. Step 3: Cross multiply
    2,289.25x = 3,430.63 × 1,118.40
  4. Step 4: Simplify right side
    2,289.25x = 3,836,816.59
  5. Step 5: Solve for x
    x = 3,836,816.59/2,289.25
  6. Step 6: Final answer
    x = 1,676.01

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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.