Home / 9,215.16-12,718.40-5,237.56

Finding the Fourth Proportional to 9,215.16, 12,718.40 and 5,237.56

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Solution

The fourth proportional to 9,215.16, 12,718.40 and 5,237.56 is: 7,228.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.16 : 12,718.40 = 5,237.56 : x
  2. Step 2: Convert to fraction form
    9,215.16/12,718.40 = 5,237.56/x
  3. Step 3: Cross multiply
    9,215.16x = 12,718.40 × 5,237.56
  4. Step 4: Simplify right side
    9,215.16x = 66,613,319.51
  5. Step 5: Solve for x
    x = 66,613,319.51/9,215.16
  6. Step 6: Final answer
    x = 7,228.67

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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.