Home / 5,782.85-7,980.36-3,130.26

Finding the Fourth Proportional to 5,782.85, 7,980.36 and 3,130.26

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Solution

The fourth proportional to 5,782.85, 7,980.36 and 3,130.26 is: 4,319.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,782.85 : 7,980.36 = 3,130.26 : x
  2. Step 2: Convert to fraction form
    5,782.85/7,980.36 = 3,130.26/x
  3. Step 3: Cross multiply
    5,782.85x = 7,980.36 × 3,130.26
  4. Step 4: Simplify right side
    5,782.85x = 24,980,601.69
  5. Step 5: Solve for x
    x = 24,980,601.69/5,782.85
  6. Step 6: Final answer
    x = 4,319.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.