Home / 4,645.85-6,970.32-1,871.80

Finding the Fourth Proportional to 4,645.85, 6,970.32 and 1,871.80

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Solution

The fourth proportional to 4,645.85, 6,970.32 and 1,871.80 is: 2,808.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,645.85 : 6,970.32 = 1,871.80 : x
  2. Step 2: Convert to fraction form
    4,645.85/6,970.32 = 1,871.80/x
  3. Step 3: Cross multiply
    4,645.85x = 6,970.32 × 1,871.80
  4. Step 4: Simplify right side
    4,645.85x = 13,047,027.55
  5. Step 5: Solve for x
    x = 13,047,027.55/4,645.85
  6. Step 6: Final answer
    x = 2,808.32

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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.