Home / 8,690.24-13,013.12-4,790.32

Finding the Fourth Proportional to 8,690.24, 13,013.12 and 4,790.32

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Solution

The fourth proportional to 8,690.24, 13,013.12 and 4,790.32 is: 7,173.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.24 : 13,013.12 = 4,790.32 : x
  2. Step 2: Convert to fraction form
    8,690.24/13,013.12 = 4,790.32/x
  3. Step 3: Cross multiply
    8,690.24x = 13,013.12 × 4,790.32
  4. Step 4: Simplify right side
    8,690.24x = 62,337,009.00
  5. Step 5: Solve for x
    x = 62,337,009.00/8,690.24
  6. Step 6: Final answer
    x = 7,173.22

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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.