Home / 9,840.64-13,589.28-6,309.98

Finding the Fourth Proportional to 9,840.64, 13,589.28 and 6,309.98

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Solution

The fourth proportional to 9,840.64, 13,589.28 and 6,309.98 is: 8,713.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,840.64 : 13,589.28 = 6,309.98 : x
  2. Step 2: Convert to fraction form
    9,840.64/13,589.28 = 6,309.98/x
  3. Step 3: Cross multiply
    9,840.64x = 13,589.28 × 6,309.98
  4. Step 4: Simplify right side
    9,840.64x = 85,748,085.01
  5. Step 5: Solve for x
    x = 85,748,085.01/9,840.64
  6. Step 6: Final answer
    x = 8,713.67

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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.