Home / 2,154.61-2,973.29-1,315.01

Finding the Fourth Proportional to 2,154.61, 2,973.29 and 1,315.01

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Solution

The fourth proportional to 2,154.61, 2,973.29 and 1,315.01 is: 1,814.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.61 : 2,973.29 = 1,315.01 : x
  2. Step 2: Convert to fraction form
    2,154.61/2,973.29 = 1,315.01/x
  3. Step 3: Cross multiply
    2,154.61x = 2,973.29 × 1,315.01
  4. Step 4: Simplify right side
    2,154.61x = 3,909,906.08
  5. Step 5: Solve for x
    x = 3,909,906.08/2,154.61
  6. Step 6: Final answer
    x = 1,814.67

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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.