Home / 9,621.84-13,279.36-5,430

Finding the Fourth Proportional to 9,621.84, 13,279.36 and 5,430

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Solution

The fourth proportional to 9,621.84, 13,279.36 and 5,430 is: 7,494.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.84 : 13,279.36 = 5,430 : x
  2. Step 2: Convert to fraction form
    9,621.84/13,279.36 = 5,430/x
  3. Step 3: Cross multiply
    9,621.84x = 13,279.36 × 5,430
  4. Step 4: Simplify right side
    9,621.84x = 72,106,924.80
  5. Step 5: Solve for x
    x = 72,106,924.80/9,621.84
  6. Step 6: Final answer
    x = 7,494.09

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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.