Home / 8,928.16-12,315.14-5,740.37

Finding the Fourth Proportional to 8,928.16, 12,315.14 and 5,740.37

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Solution

The fourth proportional to 8,928.16, 12,315.14 and 5,740.37 is: 7,918.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.16 : 12,315.14 = 5,740.37 : x
  2. Step 2: Convert to fraction form
    8,928.16/12,315.14 = 5,740.37/x
  3. Step 3: Cross multiply
    8,928.16x = 12,315.14 × 5,740.37
  4. Step 4: Simplify right side
    8,928.16x = 70,693,437.63
  5. Step 5: Solve for x
    x = 70,693,437.63/8,928.16
  6. Step 6: Final answer
    x = 7,918.03

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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.