Home / 5,445.80-8,168.70-5,407.40

Finding the Fourth Proportional to 5,445.80, 8,168.70 and 5,407.40

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Solution

The fourth proportional to 5,445.80, 8,168.70 and 5,407.40 is: 8,111.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,445.80 : 8,168.70 = 5,407.40 : x
  2. Step 2: Convert to fraction form
    5,445.80/8,168.70 = 5,407.40/x
  3. Step 3: Cross multiply
    5,445.80x = 8,168.70 × 5,407.40
  4. Step 4: Simplify right side
    5,445.80x = 44,171,428.38
  5. Step 5: Solve for x
    x = 44,171,428.38/5,445.80
  6. Step 6: Final answer
    x = 8,111.10

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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.