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Finding the Fourth Proportional to 1,487.79, 2,053.58 and 898.37

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Solution

The fourth proportional to 1,487.79, 2,053.58 and 898.37 is: 1,240.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.79 : 2,053.58 = 898.37 : x
  2. Step 2: Convert to fraction form
    1,487.79/2,053.58 = 898.37/x
  3. Step 3: Cross multiply
    1,487.79x = 2,053.58 × 898.37
  4. Step 4: Simplify right side
    1,487.79x = 1,844,859.90
  5. Step 5: Solve for x
    x = 1,844,859.90/1,487.79
  6. Step 6: Final answer
    x = 1,240.00

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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.