Home / 9,789.19-13,509.18-5,312.98

Finding the Fourth Proportional to 9,789.19, 13,509.18 and 5,312.98

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Solution

The fourth proportional to 9,789.19, 13,509.18 and 5,312.98 is: 7,331.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,789.19 : 13,509.18 = 5,312.98 : x
  2. Step 2: Convert to fraction form
    9,789.19/13,509.18 = 5,312.98/x
  3. Step 3: Cross multiply
    9,789.19x = 13,509.18 × 5,312.98
  4. Step 4: Simplify right side
    9,789.19x = 71,774,003.16
  5. Step 5: Solve for x
    x = 71,774,003.16/9,789.19
  6. Step 6: Final answer
    x = 7,331.97

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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.