Home / 8,931.14-12,325.99-5,155.32

Finding the Fourth Proportional to 8,931.14, 12,325.99 and 5,155.32

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Solution

The fourth proportional to 8,931.14, 12,325.99 and 5,155.32 is: 7,114.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.14 : 12,325.99 = 5,155.32 : x
  2. Step 2: Convert to fraction form
    8,931.14/12,325.99 = 5,155.32/x
  3. Step 3: Cross multiply
    8,931.14x = 12,325.99 × 5,155.32
  4. Step 4: Simplify right side
    8,931.14x = 63,544,405.10
  5. Step 5: Solve for x
    x = 63,544,405.10/8,931.14
  6. Step 6: Final answer
    x = 7,114.93

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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.