Home / 9,789.61-13,509.58-5,313.36

Finding the Fourth Proportional to 9,789.61, 13,509.58 and 5,313.36

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Solution

The fourth proportional to 9,789.61, 13,509.58 and 5,313.36 is: 7,332.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,789.61 : 13,509.58 = 5,313.36 : x
  2. Step 2: Convert to fraction form
    9,789.61/13,509.58 = 5,313.36/x
  3. Step 3: Cross multiply
    9,789.61x = 13,509.58 × 5,313.36
  4. Step 4: Simplify right side
    9,789.61x = 71,781,248.71
  5. Step 5: Solve for x
    x = 71,781,248.71/9,789.61
  6. Step 6: Final answer
    x = 7,332.39

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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.