Home / 9,878.85-13,632.39-5,402.77

Finding the Fourth Proportional to 9,878.85, 13,632.39 and 5,402.77

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Solution

The fourth proportional to 9,878.85, 13,632.39 and 5,402.77 is: 7,455.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,878.85 : 13,632.39 = 5,402.77 : x
  2. Step 2: Convert to fraction form
    9,878.85/13,632.39 = 5,402.77/x
  3. Step 3: Cross multiply
    9,878.85x = 13,632.39 × 5,402.77
  4. Step 4: Simplify right side
    9,878.85x = 73,652,633.64
  5. Step 5: Solve for x
    x = 73,652,633.64/9,878.85
  6. Step 6: Final answer
    x = 7,455.59

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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.