Home / 5,386.21-7,430.47-3,148.18

Finding the Fourth Proportional to 5,386.21, 7,430.47 and 3,148.18

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Solution

The fourth proportional to 5,386.21, 7,430.47 and 3,148.18 is: 4,343.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.21 : 7,430.47 = 3,148.18 : x
  2. Step 2: Convert to fraction form
    5,386.21/7,430.47 = 3,148.18/x
  3. Step 3: Cross multiply
    5,386.21x = 7,430.47 × 3,148.18
  4. Step 4: Simplify right side
    5,386.21x = 23,392,457.04
  5. Step 5: Solve for x
    x = 23,392,457.04/5,386.21
  6. Step 6: Final answer
    x = 4,343.03

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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.