Home / 3,621.08-5,430.54-1,312.04

Finding the Fourth Proportional to 3,621.08, 5,430.54 and 1,312.04

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Solution

The fourth proportional to 3,621.08, 5,430.54 and 1,312.04 is: 1,967.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.08 : 5,430.54 = 1,312.04 : x
  2. Step 2: Convert to fraction form
    3,621.08/5,430.54 = 1,312.04/x
  3. Step 3: Cross multiply
    3,621.08x = 5,430.54 × 1,312.04
  4. Step 4: Simplify right side
    3,621.08x = 7,125,085.70
  5. Step 5: Solve for x
    x = 7,125,085.70/3,621.08
  6. Step 6: Final answer
    x = 1,967.67

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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.