Home / 4,971.60-7,449.30-4,145.40

Finding the Fourth Proportional to 4,971.60, 7,449.30 and 4,145.40

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Solution

The fourth proportional to 4,971.60, 7,449.30 and 4,145.40 is: 6,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,971.60 : 7,449.30 = 4,145.40 : x
  2. Step 2: Convert to fraction form
    4,971.60/7,449.30 = 4,145.40/x
  3. Step 3: Cross multiply
    4,971.60x = 7,449.30 × 4,145.40
  4. Step 4: Simplify right side
    4,971.60x = 30,880,328.22
  5. Step 5: Solve for x
    x = 30,880,328.22/4,971.60
  6. Step 6: Final answer
    x = 6,211.35

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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.