Home / 7,130.76-10,693.38-2,972.72

Finding the Fourth Proportional to 7,130.76, 10,693.38 and 2,972.72

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Solution

The fourth proportional to 7,130.76, 10,693.38 and 2,972.72 is: 4,457.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.76 : 10,693.38 = 2,972.72 : x
  2. Step 2: Convert to fraction form
    7,130.76/10,693.38 = 2,972.72/x
  3. Step 3: Cross multiply
    7,130.76x = 10,693.38 × 2,972.72
  4. Step 4: Simplify right side
    7,130.76x = 31,788,424.59
  5. Step 5: Solve for x
    x = 31,788,424.59/7,130.76
  6. Step 6: Final answer
    x = 4,457.93

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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.