Home / 5,315.70-7,973.95-1,420.02

Finding the Fourth Proportional to 5,315.70, 7,973.95 and 1,420.02

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Solution

The fourth proportional to 5,315.70, 7,973.95 and 1,420.02 is: 2,130.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.70 : 7,973.95 = 1,420.02 : x
  2. Step 2: Convert to fraction form
    5,315.70/7,973.95 = 1,420.02/x
  3. Step 3: Cross multiply
    5,315.70x = 7,973.95 × 1,420.02
  4. Step 4: Simplify right side
    5,315.70x = 11,323,168.48
  5. Step 5: Solve for x
    x = 11,323,168.48/5,315.70
  6. Step 6: Final answer
    x = 2,130.14

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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.