Home / 8,645.60-11,931.16-5,288.35

Finding the Fourth Proportional to 8,645.60, 11,931.16 and 5,288.35

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Solution

The fourth proportional to 8,645.60, 11,931.16 and 5,288.35 is: 7,298.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.60 : 11,931.16 = 5,288.35 : x
  2. Step 2: Convert to fraction form
    8,645.60/11,931.16 = 5,288.35/x
  3. Step 3: Cross multiply
    8,645.60x = 11,931.16 × 5,288.35
  4. Step 4: Simplify right side
    8,645.60x = 63,096,106.94
  5. Step 5: Solve for x
    x = 63,096,106.94/8,645.60
  6. Step 6: Final answer
    x = 7,298.06

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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.