Home / 2,880.40-4,314.78-1,768.40

Finding the Fourth Proportional to 2,880.40, 4,314.78 and 1,768.40

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Solution

The fourth proportional to 2,880.40, 4,314.78 and 1,768.40 is: 2,649.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.40 : 4,314.78 = 1,768.40 : x
  2. Step 2: Convert to fraction form
    2,880.40/4,314.78 = 1,768.40/x
  3. Step 3: Cross multiply
    2,880.40x = 4,314.78 × 1,768.40
  4. Step 4: Simplify right side
    2,880.40x = 7,630,256.95
  5. Step 5: Solve for x
    x = 7,630,256.95/2,880.40
  6. Step 6: Final answer
    x = 2,649.03

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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.