Home / 5,541.60-8,312.40-5,119.20

Finding the Fourth Proportional to 5,541.60, 8,312.40 and 5,119.20

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Solution

The fourth proportional to 5,541.60, 8,312.40 and 5,119.20 is: 7,678.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,541.60 : 8,312.40 = 5,119.20 : x
  2. Step 2: Convert to fraction form
    5,541.60/8,312.40 = 5,119.20/x
  3. Step 3: Cross multiply
    5,541.60x = 8,312.40 × 5,119.20
  4. Step 4: Simplify right side
    5,541.60x = 42,552,838.08
  5. Step 5: Solve for x
    x = 42,552,838.08/5,541.60
  6. Step 6: Final answer
    x = 7,678.80

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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.