Home / 7,342.76-10,128.77-4,687.18

Finding the Fourth Proportional to 7,342.76, 10,128.77 and 4,687.18

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Solution

The fourth proportional to 7,342.76, 10,128.77 and 4,687.18 is: 6,465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,342.76 : 10,128.77 = 4,687.18 : x
  2. Step 2: Convert to fraction form
    7,342.76/10,128.77 = 4,687.18/x
  3. Step 3: Cross multiply
    7,342.76x = 10,128.77 × 4,687.18
  4. Step 4: Simplify right side
    7,342.76x = 47,475,368.17
  5. Step 5: Solve for x
    x = 47,475,368.17/7,342.76
  6. Step 6: Final answer
    x = 6,465.60

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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.