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Finding the Fourth Proportional to 1,457.96, 2,011.48 and 934.28

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Solution

The fourth proportional to 1,457.96, 2,011.48 and 934.28 is: 1,288.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.96 : 2,011.48 = 934.28 : x
  2. Step 2: Convert to fraction form
    1,457.96/2,011.48 = 934.28/x
  3. Step 3: Cross multiply
    1,457.96x = 2,011.48 × 934.28
  4. Step 4: Simplify right side
    1,457.96x = 1,879,285.53
  5. Step 5: Solve for x
    x = 1,879,285.53/1,457.96
  6. Step 6: Final answer
    x = 1,288.98

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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.