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Finding the Fourth Proportional to 1,562.79, 2,154.55 and 973.11

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Solution

The fourth proportional to 1,562.79, 2,154.55 and 973.11 is: 1,341.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,562.79 : 2,154.55 = 973.11 : x
  2. Step 2: Convert to fraction form
    1,562.79/2,154.55 = 973.11/x
  3. Step 3: Cross multiply
    1,562.79x = 2,154.55 × 973.11
  4. Step 4: Simplify right side
    1,562.79x = 2,096,621.62
  5. Step 5: Solve for x
    x = 2,096,621.62/1,562.79
  6. Step 6: Final answer
    x = 1,341.59

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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.