Home / 5,343.72-7,374.06-2,985.40

Finding the Fourth Proportional to 5,343.72, 7,374.06 and 2,985.40

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Solution

The fourth proportional to 5,343.72, 7,374.06 and 2,985.40 is: 4,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,343.72 : 7,374.06 = 2,985.40 : x
  2. Step 2: Convert to fraction form
    5,343.72/7,374.06 = 2,985.40/x
  3. Step 3: Cross multiply
    5,343.72x = 7,374.06 × 2,985.40
  4. Step 4: Simplify right side
    5,343.72x = 22,014,518.72
  5. Step 5: Solve for x
    x = 22,014,518.72/5,343.72
  6. Step 6: Final answer
    x = 4,119.70

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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.