Home / 6,288.30-9,386.55-5,405.40

Finding the Fourth Proportional to 6,288.30, 9,386.55 and 5,405.40

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Solution

The fourth proportional to 6,288.30, 9,386.55 and 5,405.40 is: 8,068.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,288.30 : 9,386.55 = 5,405.40 : x
  2. Step 2: Convert to fraction form
    6,288.30/9,386.55 = 5,405.40/x
  3. Step 3: Cross multiply
    6,288.30x = 9,386.55 × 5,405.40
  4. Step 4: Simplify right side
    6,288.30x = 50,738,057.37
  5. Step 5: Solve for x
    x = 50,738,057.37/6,288.30
  6. Step 6: Final answer
    x = 8,068.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.