Home / 8,931.36-12,325.56-5,393.86

Finding the Fourth Proportional to 8,931.36, 12,325.56 and 5,393.86

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Solution

The fourth proportional to 8,931.36, 12,325.56 and 5,393.86 is: 7,443.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.36 : 12,325.56 = 5,393.86 : x
  2. Step 2: Convert to fraction form
    8,931.36/12,325.56 = 5,393.86/x
  3. Step 3: Cross multiply
    8,931.36x = 12,325.56 × 5,393.86
  4. Step 4: Simplify right side
    8,931.36x = 66,482,345.06
  5. Step 5: Solve for x
    x = 66,482,345.06/8,931.36
  6. Step 6: Final answer
    x = 7,443.70

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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.