Home / 2,830.99-4,247.64-983.40

Finding the Fourth Proportional to 2,830.99, 4,247.64 and 983.40

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Solution

The fourth proportional to 2,830.99, 4,247.64 and 983.40 is: 1,475.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.99 : 4,247.64 = 983.40 : x
  2. Step 2: Convert to fraction form
    2,830.99/4,247.64 = 983.40/x
  3. Step 3: Cross multiply
    2,830.99x = 4,247.64 × 983.40
  4. Step 4: Simplify right side
    2,830.99x = 4,177,129.18
  5. Step 5: Solve for x
    x = 4,177,129.18/2,830.99
  6. Step 6: Final answer
    x = 1,475.50

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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.