Home / 8,408.16-11,603.12-4,631.40

Finding the Fourth Proportional to 8,408.16, 11,603.12 and 4,631.40

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Solution

The fourth proportional to 8,408.16, 11,603.12 and 4,631.40 is: 6,391.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.16 : 11,603.12 = 4,631.40 : x
  2. Step 2: Convert to fraction form
    8,408.16/11,603.12 = 4,631.40/x
  3. Step 3: Cross multiply
    8,408.16x = 11,603.12 × 4,631.40
  4. Step 4: Simplify right side
    8,408.16x = 53,738,666.81
  5. Step 5: Solve for x
    x = 53,738,666.81/8,408.16
  6. Step 6: Final answer
    x = 6,391.25

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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.