Home / 6,128.90-8,465.61-5,330.64

Finding the Fourth Proportional to 6,128.90, 8,465.61 and 5,330.64

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Solution

The fourth proportional to 6,128.90, 8,465.61 and 5,330.64 is: 7,363.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128.90 : 8,465.61 = 5,330.64 : x
  2. Step 2: Convert to fraction form
    6,128.90/8,465.61 = 5,330.64/x
  3. Step 3: Cross multiply
    6,128.90x = 8,465.61 × 5,330.64
  4. Step 4: Simplify right side
    6,128.90x = 45,127,119.29
  5. Step 5: Solve for x
    x = 45,127,119.29/6,128.90
  6. Step 6: Final answer
    x = 7,363.01

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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.