Home / 7,001.36-10,486.12-5,428.76

Finding the Fourth Proportional to 7,001.36, 10,486.12 and 5,428.76

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Solution

The fourth proportional to 7,001.36, 10,486.12 and 5,428.76 is: 8,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,001.36 : 10,486.12 = 5,428.76 : x
  2. Step 2: Convert to fraction form
    7,001.36/10,486.12 = 5,428.76/x
  3. Step 3: Cross multiply
    7,001.36x = 10,486.12 × 5,428.76
  4. Step 4: Simplify right side
    7,001.36x = 56,926,628.81
  5. Step 5: Solve for x
    x = 56,926,628.81/7,001.36
  6. Step 6: Final answer
    x = 8,130.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.