Home / 3,130.50-4,319.72-1,804.64

Finding the Fourth Proportional to 3,130.50, 4,319.72 and 1,804.64

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Solution

The fourth proportional to 3,130.50, 4,319.72 and 1,804.64 is: 2,490.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.50 : 4,319.72 = 1,804.64 : x
  2. Step 2: Convert to fraction form
    3,130.50/4,319.72 = 1,804.64/x
  3. Step 3: Cross multiply
    3,130.50x = 4,319.72 × 1,804.64
  4. Step 4: Simplify right side
    3,130.50x = 7,795,539.50
  5. Step 5: Solve for x
    x = 7,795,539.50/3,130.50
  6. Step 6: Final answer
    x = 2,490.19

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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.