Home / 3,412.34-5,118.50-947.16

Finding the Fourth Proportional to 3,412.34, 5,118.50 and 947.16

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Solution

The fourth proportional to 3,412.34, 5,118.50 and 947.16 is: 1,420.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.34 : 5,118.50 = 947.16 : x
  2. Step 2: Convert to fraction form
    3,412.34/5,118.50 = 947.16/x
  3. Step 3: Cross multiply
    3,412.34x = 5,118.50 × 947.16
  4. Step 4: Simplify right side
    3,412.34x = 4,848,038.46
  5. Step 5: Solve for x
    x = 4,848,038.46/3,412.34
  6. Step 6: Final answer
    x = 1,420.74

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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.