Home / 4,679.40-6,457.47-2,689.91

Finding the Fourth Proportional to 4,679.40, 6,457.47 and 2,689.91

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Solution

The fourth proportional to 4,679.40, 6,457.47 and 2,689.91 is: 3,712.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.40 : 6,457.47 = 2,689.91 : x
  2. Step 2: Convert to fraction form
    4,679.40/6,457.47 = 2,689.91/x
  3. Step 3: Cross multiply
    4,679.40x = 6,457.47 × 2,689.91
  4. Step 4: Simplify right side
    4,679.40x = 17,369,980.84
  5. Step 5: Solve for x
    x = 17,369,980.84/4,679.40
  6. Step 6: Final answer
    x = 3,712.01

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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.