Home / 5,312.93-7,970.34-2,191.20

Finding the Fourth Proportional to 5,312.93, 7,970.34 and 2,191.20

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Solution

The fourth proportional to 5,312.93, 7,970.34 and 2,191.20 is: 3,287.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,312.93 : 7,970.34 = 2,191.20 : x
  2. Step 2: Convert to fraction form
    5,312.93/7,970.34 = 2,191.20/x
  3. Step 3: Cross multiply
    5,312.93x = 7,970.34 × 2,191.20
  4. Step 4: Simplify right side
    5,312.93x = 17,464,609.01
  5. Step 5: Solve for x
    x = 17,464,609.01/5,312.93
  6. Step 6: Final answer
    x = 3,287.19

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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.